ASTROSAT CZTI

Data Quality Report

Orbit 20220226_A07_093T16_9000004966_level2

Creation date: 2022-03-01T13:52:32.362386
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_093T16_9000004966cztM0_level2_bc.evt modeM0/AS1A07_093T16_9000004966cztM0_level2_quad_clean.evt
Size (bytes)477,506,880137,450,880
Size455.4 MB 131.1 MB
Events in quadrant A1,915,859929,684
Events in quadrant B3,393,021898,420
Events in quadrant C2,105,518918,514
Events in quadrant D6,458,418821,988

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178080
B0242230
C0176180
D0330830

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8557240.280472%
B85577118.308987%
C8557260.303845%
D8557100211.709711%

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 11151 8559 2 2 0.02% 0.02%
B 11151 8555 28 28 0.25% 0.33%
C 11151 8557 4 4 0.04% 0.05%
D 11151 8555 127 127 1.14% 1.48%

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 15 174 94630 967.0 427 418 97.4
A 10 83 55053 560.78 427 418 97.4
A 9 143 37730 382.97 427 418 97.4
B 5 255 883604 10500.68 410 400 84.1
B 5 172 756952 8994.88 410 400 84.1
B 0 190 61537 726.88 410 400 84.1
C 15 214 344124 3482.05 416 410 98.7
C 0 10 50167 504.07 416 410 98.7
C 14 67 46494 466.86 416 410 98.7
D 8 195 3023507 29932.64 399 386 101.0
D 7 38 1053662 10428.74 399 386 101.0
D 2 250 265161 2621.6 399 386 101.0

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