ASTROSAT CZTI

Data Quality Report

Orbit 20200508_T03_200T01_9000003654_level2

Creation date: 2020-05-17T01:07:46.809205
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/AS1T03_200T01_9000003654cztM0_level2_bc.evt modeM0/AS1T03_200T01_9000003654cztM0_level2_quad_clean.evt
Size (bytes)7,386,148,8003,550,988,160
Size6.9 GB 3.3 GB
Events in quadrant A38,454,74224,327,857
Events in quadrant B45,869,99024,698,606
Events in quadrant C52,286,68523,470,944
Events in quadrant D74,669,10722,572,611

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03130
B03130
C03130
D03130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037160
B037160
C037160
D037160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03757120
B04022310
C04239250
D04922430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18247418431.010007%
B18247535561.948760%
C18247542992.355939%
D18247573124.007124%

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 213856 182480 40 40 0.02% 0.02%
B 213856 182483 204 204 0.10% 0.11%
C 213856 182480 409 409 0.19% 0.22%
D 213856 182479 2046 2046 0.96% 1.12%

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 4 2 306950 140.88 9788 9650 2110.4
A 13 254 271743 124.19 9788 9650 2110.4
A 6 16 200358 90.37 9788 9650 2110.4
B 3 64 2040120 1096.58 9891 9670 1851.6
B 5 172 1397527 749.54 9891 9670 1851.6
B 0 229 1014270 542.55 9891 9670 1851.6
C 7 247 15213964 6829.08 9389 9381 2226.4
C 0 207 308304 134.26 9389 9381 2226.4
C 3 233 269241 116.72 9389 9381 2226.4
D 1 52 16581774 7515.09 9447 9138 2205.2
D 1 3 9771175 4426.73 9447 9138 2205.2
D 8 195 6553589 2967.67 9447 9138 2205.2

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