ASTROSAT CZTI

Data Quality Report

Orbit 20210827_A10_053T10_9000004670_level2

Creation date: 2021-08-28T12:35:52.106122
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

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/AS1A10_053T10_9000004670cztM0_level2_bc.evt modeM0/AS1A10_053T10_9000004670cztM0_level2_quad_clean.evt
Size (bytes)1,322,254,080284,304,960
Size1.2 GB 271.1 MB
Events in quadrant A5,041,6621,811,200
Events in quadrant B11,457,1801,822,228
Events in quadrant C12,405,1121,692,843
Events in quadrant D9,618,5011,745,015

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0466780
B0699700
C0718880
D0618930

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04540
B04540
C04540
D04540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A223691220.545398%
B223695552.481112%
C22369270912.110510%
D223694461.993831%

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 26774 22366 0 0 0.00% 0.00%
B 26774 22365 38 38 0.14% 0.17%
C 26774 22365 745 745 2.78% 3.33%
D 26774 22366 46 46 0.17% 0.21%

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 13 254 34994 121.97 1303 1283 276.4
A 14 238 11742 37.84 1303 1283 276.4
A 0 226 8145 24.83 1303 1283 276.4
B 6 159 5652872 23064.22 1317 1292 245.0
B 10 245 624918 2545.03 1317 1292 245.0
B 0 190 89646 360.57 1317 1292 245.0
C 0 10 7028557 24121.88 1245 1247 291.3
C 3 233 483120 1654.07 1245 1247 291.3
C 10 22 40472 134.64 1245 1247 291.3
D 11 164 2411717 8375.05 1298 1262 287.8
D 8 195 1027944 3567.17 1298 1262 287.8
D 7 238 774990 2688.29 1298 1262 287.8

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