ASTROSAT CZTI

Data Quality Report

Orbit 52294

Creation date: 2025-07-22T12:30:42.331958
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_011T05_9000006474_52294cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52294cztM0_level2_quad_clean.evt
Size (bytes)816,569,28071,017,920
Size778.7 MB 67.7 MB
Events in quadrant A3,557,393613,972
Events in quadrant B4,153,444608,091
Events in quadrant C12,176,995159,644
Events in quadrant D9,871,386347,221

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147901
B0164171
C0403029
D0334891

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60321782.950928%
B60324677.742042%
C6031457775.891229%
D6031250541.535400%

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 7072 6032 58 58 0.82% 0.96%
B 7072 6032 294 294 4.16% 4.87%
C 7070 6030 3702 3702 52.36% 61.39%
D 7071 6031 2290 2290 32.39% 37.97%

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 12 3 316011 1895.08 655 641 166.4
A 4 249 122379 731.53 655 641 166.4
A 13 248 103354 617.21 655 641 166.4
B 10 44 403074 3059.31 621 602 131.6
B 5 32 307326 2331.5 621 602 131.6
B 4 171 206791 1567.3 621 602 131.6
C 15 178 4052760 47001.24 303 300 86.2
C 0 161 3419614 39657.89 303 300 86.2
C 15 158 785050 9101.69 303 300 86.2
D 15 93 6321278 40285.2 536 513 156.9
D 8 176 519579 3308.25 536 513 156.9
D 7 96 152691 969.9 536 513 156.9

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