ASTROSAT CZTI

Data Quality Report

Orbit 35308

Creation date: 2022-04-09T19:43:06.462515
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/AS1T05_023T01_9000005058_35308cztM0_level2.evt modeM0/AS1T05_023T01_9000005058_35308cztM0_level2_quad_clean.evt
Size (bytes)779,526,72063,872,640
Size743.4 MB 60.9 MB
Events in quadrant A3,795,455469,538
Events in quadrant B7,121,611413,322
Events in quadrant C2,876,990470,237
Events in quadrant D9,460,903212,000

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147643
B0247912
C0114872
D0316902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5234921.757738%
B5234172432.938479%
C5234931.776844%
D5234286854.795567%

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 7177 5235 75 75 1.05% 1.43%
B 7176 5233 1344 1344 18.73% 25.68%
C 7177 5235 58 58 0.81% 1.11%
D 7176 5234 2866 2866 39.94% 54.76%

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 15 169 1233328 10004.38 615 605 123.2
A 10 83 95787 772.47 615 605 123.2
A 7 3 45142 361.45 615 605 123.2
B 5 236 3466245 33553.68 535 519 103.3
B 5 172 1516297 14675.12 535 519 103.3
B 4 232 28101 267.04 535 519 103.3
C 0 10 279663 2026.72 595 598 137.7
C 15 214 219046 1586.49 595 598 137.7
C 3 233 56088 403.0 595 598 137.7
D 10 203 5862146 57804.0 404 392 101.4
D 7 80 986849 9727.66 404 392 101.4
D 8 195 317415 3126.23 404 392 101.4

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