ASTROSAT CZTI

Data Quality Report

Orbit 20200923_A09_145T01_9000003900_level2

Creation date: 2021-01-08T05:04:30.220372
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev: 1121 $

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A09_145T01_9000003900cztM0_level2_bc.evt modeM0/AS1A09_145T01_9000003900cztM0_level2_quad_clean.evt
Size (bytes)11,564,343,3603,183,373,440
Size10.8 GB 3.0 GB
Events in quadrant A132,546,40918,406,556
Events in quadrant B54,459,55621,884,881
Events in quadrant C49,139,04420,964,603
Events in quadrant D98,972,36619,941,065

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A045260
B045260
C045260
D045260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09024170
B04843620
C04717720
D06427410

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03540
B03550
C03550
D03550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2220955478824.668723%
B22209541241.856863%
C22209539161.763209%
D222094152336.858808%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 261998 222067 5210 5210 1.99% 2.35%
B 261998 222062 135 135 0.05% 0.06%
C 261998 222069 26 26 0.01% 0.01%
D 261998 222062 3302 3302 1.26% 1.49%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 14 235 52813130 21236.23 11304 11108 2486.4
A 6 16 34594617 13909.0 11304 11108 2486.4
A 12 16 748630 296.62 11304 11108 2486.4
B 0 189 2305949 923.42 12965 12743 2483.4
B 10 245 722121 285.65 12965 12743 2483.4
B 5 172 593763 233.96 12965 12743 2483.4
C 15 208 646144 215.85 12441 12505 2935.6
C 2 16 291012 94.87 12441 12505 2935.6
C 3 233 135957 42.05 12441 12505 2935.6
D 1 52 29824024 10008.48 12209 11858 2978.7
D 5 222 6909406 2315.63 12209 11858 2978.7
D 11 176 5467124 1831.43 12209 11858 2978.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter