ASTROSAT CZTI

Data Quality Report

Orbit 09566

Creation date: 2024-06-27T15:47:48.440777
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/AS1G07_069T01_9000001356_09566cztM0_level2.evt modeM0/AS1G07_069T01_9000001356_09566cztM0_level2_quad_clean.evt
Size (bytes)730,635,840159,456,960
Size696.8 MB 152.1 MB
Events in quadrant A5,584,3011,041,238
Events in quadrant B5,445,3691,042,634
Events in quadrant C4,960,2671,022,374
Events in quadrant D5,432,5471,002,607

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232643
B0226532
C0214942
D0227562

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A103991931.855948%
B103991681.615540%
C103991061.019329%
D103991531.471295%

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 12889 10400 6 6 0.05% 0.06%
B 12889 10400 13 13 0.10% 0.12%
C 12889 10400 0 0 0.00% 0.00%
D 12889 10400 33 33 0.26% 0.32%

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 1 162 220904 837.91 1325 1297 262.1
A 1 178 94257 354.69 1325 1297 262.1
A 1 161 92109 346.49 1325 1297 262.1
B 0 214 113910 459.4 1313 1284 245.2
B 0 187 94913 381.92 1313 1284 245.2
B 15 85 63520 253.86 1313 1284 245.2
C 13 61 9423 28.06 1270 1274 290.4
C 1 0 3543 7.81 1270 1274 290.4
C 14 67 3307 7.0 1270 1274 290.4
D 7 71 177960 576.84 1280 1249 306.3
D 1 52 118037 381.23 1280 1249 306.3
D 12 233 105938 341.74 1280 1249 306.3

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