ASTROSAT CZTI

Data Quality Report

Orbit 20211

Creation date: 2024-06-27T18:12:29.709938
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/AS1A05_117T01_9000002998_20211cztM0_level2.evt modeM0/AS1A05_117T01_9000002998_20211cztM0_level2_quad_clean.evt
Size (bytes)298,877,76041,497,920
Size285.0 MB 39.6 MB
Events in quadrant A1,968,152250,442
Events in quadrant B2,189,420250,781
Events in quadrant C1,974,950240,306
Events in quadrant D2,652,918239,501

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082331
B089292
C081901
D0104221

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3896812.079055%
B38951443.697047%
C3895862.207959%
D38952265.802311%

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 4201 3897 2 2 0.05% 0.05%
B 4200 3896 14 14 0.33% 0.36%
C 4200 3896 0 0 0.00% 0.00%
D 4200 3896 119 119 2.83% 3.05%

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 2 14084 129.46 505 493 105.0
A 14 238 6883 60.86 505 493 105.0
A 0 226 4399 37.2 505 493 105.0
B 0 197 116761 1205.81 495 482 96.4
B 7 220 48302 495.89 495 482 96.4
B 15 36 46368 475.84 495 482 96.4
C 14 238 72278 630.49 480 483 113.9
C 3 233 24399 210.02 480 483 113.9
C 1 16 5188 41.32 480 483 113.9
D 7 38 431256 3629.47 488 472 118.7
D 1 52 163959 1377.42 488 472 118.7
D 5 222 107889 905.02 488 472 118.7

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