ASTROSAT CZTI

Data Quality Report

Orbit 55563

Creation date: 2026-01-04T18:21:56.860269
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/AS1A14_021T06_9000006538_55563cztM0_level2.fits modeM0/AS1A14_021T06_9000006538_55563cztM0_level2_quad_clean.evt
Size (bytes)320,725,44085,864,320
Size305.9 MB 81.9 MB
Events in quadrant A2,713,549559,571
Events in quadrant B2,633,601603,351
Events in quadrant C2,816,105535,217
Events in quadrant D3,255,038494,415

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012751302
B012604270
C012876253
D014245368

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01242
B01242
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A58101192.048193%
B58161222.097662%
C5830420.720412%
D58021753.016201%

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 7707 5936 30 30 0.39% 0.51%
B 7708 5943 13 13 0.17% 0.22%
C 7707 5940 10 10 0.13% 0.17%
D 7707 5924 136 136 1.76% 2.30%

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 0 8 215281 1414.92 615 599 151.7
A 3 14 31577 204.17 615 599 151.7
A 14 254 19484 124.47 615 599 151.7
B 1 238 64521 497.24 603 579 128.6
B 10 247 60160 463.33 603 579 128.6
B 9 254 30790 234.93 603 579 128.6
C 9 38 241386 1486.6 592 587 162.0
C 13 3 164558 1012.29 592 587 162.0
C 15 178 78182 479.04 592 587 162.0
D 11 129 294827 1765.91 588 561 166.6
D 2 31 167655 1002.74 588 561 166.6
D 8 128 101334 604.74 588 561 166.6

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