ASTROSAT CZTI

Data Quality Report

Orbit 54956

Creation date: 2025-11-24T22:15:00.365417
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_014T01_9000006528_54956cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54956cztM0_level2_quad_clean.evt
Size (bytes)803,479,68088,364,160
Size766.3 MB 84.3 MB
Events in quadrant A3,544,756699,169
Events in quadrant B3,315,568751,167
Events in quadrant C3,701,386667,527
Events in quadrant D18,599,25237,808

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160293
B0156326
C0163566
D06039223

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7469350.468604%
B7468480.642742%
C7468390.522228%
D7467705894.522566%

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 7470 7470 25 25 0.33% 0.33%
B 7471 7471 11 11 0.15% 0.15%
C 7471 7471 36 36 0.48% 0.48%
D 7470 7470 6619 6619 88.61% 88.61%

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 0 8 256373 1266.27 818 796 201.8
A 4 3 50825 247.87 818 796 201.8
A 3 14 36476 176.78 818 796 201.8
B 7 252 45548 254.21 809 778 176.1
B 12 111 21735 119.0 809 778 176.1
B 6 239 21634 118.42 809 778 176.1
C 1 16 119220 542.52 799 791 218.3
C 14 254 113443 516.05 799 791 218.3
C 12 252 97995 445.29 799 791 218.3
D 15 94 17418614 283708.26 211 202 61.4
D 2 249 87157 1416.31 211 202 61.4
D 11 129 56273 913.28 211 202 61.4

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