ASTROSAT CZTI

Data Quality Report

Orbit 19587

Creation date: 2024-06-27T18:04:30.577137
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/AS1T03_115T01_9000002914_19587cztM0_level2.evt modeM0/AS1T03_115T01_9000002914_19587cztM0_level2_quad_clean.evt
Size (bytes)480,830,40081,195,840
Size458.6 MB 77.4 MB
Events in quadrant A3,229,870503,656
Events in quadrant B3,522,217505,967
Events in quadrant C3,321,873491,106
Events in quadrant D4,022,021480,077

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140491
B0147571
C0141831
D0165641

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68601211.763848%
B68611722.506923%
C68611432.084244%
D68611562.273721%

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 7390 6860 0 0 0.00% 0.00%
B 7391 6862 32 32 0.43% 0.47%
C 7391 6863 0 0 0.00% 0.00%
D 7391 6863 76 76 1.03% 1.11%

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 5 16 15821 89.0 833 817 168.6
A 13 254 11549 63.66 833 817 168.6
A 0 226 7295 38.43 833 817 168.6
B 3 64 81336 505.17 824 802 159.4
B 15 32 60467 374.26 824 802 159.4
B 4 216 50932 314.45 824 802 159.4
C 14 238 123482 664.73 791 794 184.6
C 5 112 58186 310.95 791 794 184.6
C 3 233 42287 224.81 791 794 184.6
D 1 52 384173 1954.46 807 783 196.2
D 10 230 121262 614.18 807 783 196.2
D 12 218 107521 544.13 807 783 196.2

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