ASTROSAT CZTI

Data Quality Report

Orbit 20220401_T05_016T01_9000005048_level2

Creation date: 2022-04-02T15:38:08.636393
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_016T01_9000005048cztM0_level2_bc.evt modeM0/AS1T05_016T01_9000005048cztM0_level2_quad_clean.evt
Size (bytes)836,640,000150,828,480
Size797.9 MB 143.8 MB
Events in quadrant A1,871,4181,109,619
Events in quadrant B8,053,001852,869
Events in quadrant C2,317,7001,092,841
Events in quadrant D12,479,508886,389

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181500
B0497190
C0188280
D0529760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8980110.122494%
B8980443949.432071%
C8980460.512249%
D8980303633.808463%

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 10443 8981 0 0 0.00% 0.00%
B 10443 8977 79 79 0.76% 0.88%
C 10443 8980 13 13 0.12% 0.14%
D 10443 8980 981 981 9.39% 10.92%

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 92920 917.62 444 435 100.8
A 13 6 21919 213.16 444 435 100.8
A 13 254 15389 148.37 444 435 100.8
B 5 236 6403783 87434.81 347 341 73.2
B 5 172 234835 3201.86 347 341 73.2
B 4 232 24877 335.02 347 341 73.2
C 15 214 348909 3428.16 432 428 101.7
C 0 10 133663 1310.69 432 428 101.7
C 1 23 66550 650.47 432 428 101.7
D 8 195 9336583 95456.42 386 371 97.8
D 2 120 477112 4874.35 386 371 97.8
D 7 80 294902 3011.38 386 371 97.8

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