ASTROSAT CZTI

Data Quality Report

Orbit 48155

Creation date: 2024-08-24T08:47:44.871739
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_009T01_9000006406_48155cztM0_level2.fits modeM0/AS1C09_009T01_9000006406_48155cztM0_level2_quad_clean.evt
Size (bytes)2,551,956,480515,070,720
Size2.4 GB 491.2 MB
Events in quadrant A42,488,0094,446,337
Events in quadrant B7,057,676320
Events in quadrant C19,144,6474,435,195
Events in quadrant D22,669,9163,992,137

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08080
B08080
C08080
D08080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01542646
B0429456
C0850026
D0954826

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3960016024.045455%
B396013959999.994950%
C396015651.426732%
D3960110772.719628%

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 44105 39607 164 164 0.37% 0.41%
B 44105 39459 14 14 0.03% 0.04%
C 44106 39607 202 202 0.46% 0.51%
D 44106 39607 534 534 1.21% 1.35%

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 10 83 24253267 25478.73 4555 4466 951.7
A 13 248 270991 280.04 4555 4466 951.7
A 0 31 143551 146.14 4555 4466 951.7
B 2 177 5455710 90895.53 287 280 60.0
B 4 171 240001 3994.11 287 280 60.0
B 4 21 148102 2462.93 287 280 60.0
C 14 254 707758 662.92 4487 4529 1060.8
C 12 2 660038 617.93 4487 4529 1060.8
C 0 207 120319 109.15 4487 4529 1060.8
D 2 165 1295607 1138.66 4479 4344 1134.0
D 12 233 1266255 1112.78 4479 4344 1134.0
D 12 2 1016447 892.49 4479 4344 1134.0

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