ASTROSAT CZTI

Data Quality Report

Orbit 52588

Creation date: 2025-06-18T15:07:34.440358
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/AS1C09_011T06_9000006478_52588cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52588cztM0_level2_quad_clean.evt
Size (bytes)751,377,600100,782,720
Size716.6 MB 96.1 MB
Events in quadrant A3,917,182702,704
Events in quadrant B8,979,093656,724
Events in quadrant C5,813,913618,900
Events in quadrant D8,511,252541,227

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175761
B0320321
C0228791
D0306861

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76472012.628482%
B7648143118.710774%
C76487339.584205%
D7647143818.804760%

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 7717 7648 139 139 1.80% 1.82%
B 7718 7648 1072 1072 13.89% 14.02%
C 7718 7649 703 703 9.11% 9.19%
D 7717 7648 1369 1369 17.74% 17.90%

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 4 249 271171 1366.7 794 773 197.8
A 8 249 228306 1150.04 794 773 197.8
A 7 190 109897 551.56 794 773 197.8
B 10 254 4225858 26093.18 760 734 161.9
B 10 44 545677 3365.42 760 734 161.9
B 10 128 426266 2627.97 760 734 161.9
C 13 3 1904913 9447.02 727 720 201.6
C 15 248 306666 1517.85 727 720 201.6
C 15 224 263865 1305.51 727 720 201.6
D 15 125 3048992 15130.49 703 669 201.5
D 8 176 1027587 5097.15 703 669 201.5
D 2 62 669588 3320.21 703 669 201.5

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