ASTROSAT CZTI

Data Quality Report

Orbit 58772

Creation date: 2026-08-09T12:19:37.084802
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_58772cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58772cztM0_level2_quad_clean.evt
Size (bytes)644,846,40077,040,000
Size615.0 MB 73.5 MB
Events in quadrant A2,794,886607,049
Events in quadrant B3,584,232646,465
Events in quadrant C3,074,104576,456
Events in quadrant D13,946,10381,009

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012863360
B015010378
C013811425
D0471871734

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01264
B01253
C01264
D01264

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6058981.617696%
B60581943.202377%
C60541111.833499%
D5991535689.400768%

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 7246 6091 6 6 0.08% 0.10%
B 7257 6095 52 52 0.72% 0.85%
C 7247 6091 33 33 0.46% 0.54%
D 7147 6017 4778 4778 66.85% 79.41%

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 3 14 29921 168.25 697 679 173.8
A 3 245 24980 139.82 697 679 173.8
A 15 233 14514 79.6 697 679 173.8
B 0 171 408100 2786.25 681 657 146.2
B 8 234 183685 1251.62 681 657 146.2
B 0 186 80020 542.71 681 657 146.2
C 6 223 189858 1030.83 669 664 183.5
C 13 3 114651 621.06 669 664 183.5
C 14 254 52400 281.88 669 664 183.5
D 12 110 7209859 58773.74 422 402 122.7
D 11 129 4693390 38258.7 422 402 122.7
D 2 120 188966 1537.23 422 402 122.7

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