ASTROSAT CZTI

Data Quality Report

Orbit 56349

Creation date: 2026-02-26T15:56:52.797778
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_083T05_9000006554_56349cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56349cztM0_level2_quad_clean.evt
Size (bytes)820,206,72080,501,760
Size782.2 MB 76.8 MB
Events in quadrant A5,753,957580,682
Events in quadrant B7,193,693550,428
Events in quadrant C5,897,854506,852
Events in quadrant D11,013,726346,092

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215341
B0258691
C0220991
D0371801

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64946119.408685%
B6495153223.587375%
C6495113217.428791%
D6495276442.555812%

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 7359 6494 451 451 6.13% 6.94%
B 7360 6495 1214 1214 16.49% 18.69%
C 7360 6496 833 833 11.32% 12.82%
D 7360 6496 2500 2500 33.97% 38.49%

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 95 1791022 10383.82 696 680 172.4
A 1 191 267524 1547.67 696 680 172.4
A 0 8 258872 1497.49 696 680 172.4
B 5 172 4070339 30055.26 634 611 135.4
B 4 171 119214 875.89 634 611 135.4
B 5 185 82370 603.79 634 611 135.4
C 15 230 2290966 13129.26 633 626 174.4
C 13 3 468806 2683.82 633 626 174.4
C 12 254 207493 1185.86 633 626 174.4
D 2 62 5221824 31828.45 580 552 164.0
D 8 129 1537530 9369.29 580 552 164.0
D 12 3 813502 4955.67 580 552 164.0

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