ASTROSAT CZTI

Data Quality Report

Orbit 52216

Creation date: 2025-06-20T12:11:50.802498
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/AS1C09_011T08_9000006472_52216cztM0_level2.fits modeM0/AS1C09_011T08_9000006472_52216cztM0_level2_quad_clean.evt
Size (bytes)949,867,20076,080,960
Size905.9 MB 72.6 MB
Events in quadrant A3,720,183607,879
Events in quadrant B7,059,294597,334
Events in quadrant C8,750,358475,503
Events in quadrant D15,117,151158,471

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158743
B0255191
C0306011
D0495071

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6655981.472577%
B665686312.965745%
C6656163124.504207%
D6656501975.405649%

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 7435 6655 59 59 0.79% 0.89%
B 7436 6657 727 727 9.78% 10.92%
C 7436 6657 1435 1435 19.30% 21.56%
D 7435 6656 4952 4952 66.60% 74.40%

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 12 3 254974 1490.38 686 667 170.6
A 4 158 203354 1187.86 686 667 170.6
A 14 254 193248 1128.63 686 667 170.6
B 10 254 2108339 14841.62 662 640 142.0
B 5 32 838975 5903.24 662 640 142.0
B 0 197 525418 3695.29 662 640 142.0
C 15 224 1983428 11859.16 605 601 167.2
C 15 177 1304475 7798.39 605 601 167.2
C 15 161 1077932 6443.45 605 601 167.2
D 6 42 8936209 80893.09 378 359 110.5
D 15 93 1476381 13361.91 378 359 110.5
D 8 176 983717 8901.99 378 359 110.5

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