ASTROSAT CZTI

Data Quality Report

Orbit 21937

Creation date: 2024-06-27T18:34:11.985354
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/AS1A07_100T03_9000003242_21937cztM0_level2.evt modeM0/AS1A07_100T03_9000003242_21937cztM0_level2_quad_clean.evt
Size (bytes)1,031,235,840232,156,800
Size983.5 MB 221.4 MB
Events in quadrant A5,753,0481,579,281
Events in quadrant B6,035,5961,598,475
Events in quadrant C5,819,4251,554,676
Events in quadrant D12,762,3061,418,853

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257703
B0263153
C0258613
D0469533

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12739700.549494%
B127391170.918439%
C127391080.847790%
D12739158312.426407%

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 14089 12739 1 1 0.01% 0.01%
B 14089 12739 15 15 0.11% 0.12%
C 14089 12739 0 0 0.00% 0.00%
D 14089 12740 1388 1388 9.85% 10.89%

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 13 254 22268 70.26 1484 1453 296.3
A 4 2 18484 57.48 1484 1453 296.3
A 3 1 12806 38.32 1484 1453 296.3
B 3 64 135073 475.24 1479 1439 281.2
B 0 219 36231 123.73 1479 1439 281.2
B 12 111 34418 117.28 1479 1439 281.2
C 14 238 225640 678.95 1426 1431 330.2
C 5 4 25523 72.95 1426 1431 330.2
C 13 61 9919 25.7 1426 1431 330.2
D 12 235 3767002 11415.52 1376 1335 329.9
D 7 238 3031387 9185.52 1376 1335 329.9
D 1 52 315813 953.33 1376 1335 329.9

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