ASTROSAT CZTI

Data Quality Report

Orbit 59286

Creation date: 2026-09-12T06:14:44.110600
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_9000006606_59286cztM0_level2.fits modeM0/AS1A14_021T06_9000006606_59286cztM0_level2_quad_clean.evt
Size (bytes)702,460,80092,911,680
Size669.9 MB 88.6 MB
Events in quadrant A3,288,919682,916
Events in quadrant B5,385,842676,076
Events in quadrant C3,980,334643,420
Events in quadrant D12,803,803322,112

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152092
B0210352
C0171332
D0428892

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7007430.613672%
B700882311.743721%
C70082052.925228%
D7008361151.526826%

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 7632 7008 20 20 0.26% 0.29%
B 7633 7009 646 646 8.46% 9.22%
C 7633 7009 179 179 2.35% 2.55%
D 7633 7008 2951 2951 38.66% 42.11%

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 7 64 155036 841.39 739 721 183.4
A 10 251 104237 564.41 739 721 183.4
A 14 238 34162 182.33 739 721 183.4
B 4 236 2062029 13663.05 707 681 150.9
B 5 185 105697 696.07 707 681 150.9
B 10 31 86279 567.36 707 681 150.9
C 12 252 967880 4899.8 725 719 197.4
C 14 96 70882 355.46 725 719 197.4
C 14 254 53024 264.99 725 719 197.4
D 12 110 8563319 49787.13 596 566 172.0
D 2 249 885552 5145.65 596 566 172.0
D 8 240 642339 3731.51 596 566 172.0

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

TCT plots

Parameter TCT0 TCT_healed
Tct