ASTROSAT CZTI

Data Quality Report

Orbit 58778

Creation date: 2026-08-09T14:32:31.865992
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_106T01_9000006596_58778cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58778cztM0_level2_quad_clean.evt
Size (bytes)863,513,28092,563,200
Size823.5 MB 88.3 MB
Events in quadrant A3,830,134747,010
Events in quadrant B5,318,211772,304
Events in quadrant C3,874,615711,538
Events in quadrant D18,344,67237,596

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168462
B0211470
C0170553
D05964916

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7676720.937989%
B76773654.754461%
C7675771.003257%
D7674734195.660672%

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 7677 7677 49 49 0.64% 0.64%
B 7677 7677 150 150 1.95% 1.95%
C 7676 7676 63 63 0.82% 0.82%
D 7676 7674 6868 6868 89.47% 89.50%

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 15 233 170082 789.98 861 841 214.2
A 2 143 110272 510.8 861 841 214.2
A 7 64 61876 284.9 861 841 214.2
B 8 234 667794 3709.12 844 813 179.8
B 0 171 518261 2877.56 844 813 179.8
B 4 171 188444 1043.43 844 813 179.8
C 6 223 122631 535.12 836 829 227.6
C 4 5 117637 513.18 836 829 227.6
C 13 3 64246 278.62 836 829 227.6
D 12 110 11111239 92489.45 414 395 120.1
D 11 129 4905501 40831.33 414 395 120.1
D 2 249 261081 2170.02 414 395 120.1

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