ASTROSAT CZTI

Data Quality Report

Orbit 58138

Creation date: 2026-07-01T13:41:49.289096
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_042T02_9000006586_58138cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58138cztM0_level2_quad_clean.evt
Size (bytes)707,561,28099,267,840
Size674.8 MB 94.7 MB
Events in quadrant A3,541,683727,425
Events in quadrant B5,776,920706,564
Events in quadrant C3,748,814682,096
Events in quadrant D12,559,567382,981

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154351
B0220681
C0163501
D0424091

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7278210.288541%
B727974010.166232%
C7279460.631955%
D7278341046.853531%

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 7643 7279 3 3 0.04% 0.04%
B 7643 7279 547 547 7.16% 7.51%
C 7644 7280 32 32 0.42% 0.44%
D 7643 7279 2790 2790 36.50% 38.33%

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 11 3 195782 956.43 821 802 203.9
A 3 14 47552 229.32 821 802 203.9
A 13 248 41437 199.33 821 802 203.9
B 10 128 1494337 8974.38 775 748 166.4
B 2 249 522021 3132.12 775 748 166.4
B 5 185 220292 1319.15 775 748 166.4
C 6 223 349771 1614.42 787 779 216.2
C 9 38 143936 662.24 787 779 216.2
C 12 252 120016 551.58 787 779 216.2
D 12 110 8765922 46164.37 663 635 189.9
D 8 240 380070 1998.38 663 635 189.9
D 8 160 307139 1614.27 663 635 189.9

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