ASTROSAT CZTI

Data Quality Report

Orbit 36121

Creation date: 2022-08-10T16:03:12.170317
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/AS1T04_069T01_9000005158_36121cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36121cztM0_level2_quad_clean.evt
Size (bytes)461,450,88079,165,440
Size440.1 MB 75.5 MB
Events in quadrant A2,818,479511,030
Events in quadrant B3,489,626506,498
Events in quadrant C3,104,747499,918
Events in quadrant D4,168,887474,949

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120143
B0140222
C0127432
D0162372

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5783160.276673%
B57831963.389244%
C5783781.348781%
D57833606.225143%

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 7126 5784 1 1 0.01% 0.02%
B 7126 5784 140 140 1.96% 2.42%
C 7126 5784 45 45 0.63% 0.78%
D 7126 5784 326 326 4.57% 5.64%

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 182617 1341.29 665 652 135.7
A 9 143 46351 336.85 665 652 135.7
A 13 254 8257 56.06 665 652 135.7
B 5 172 722851 5664.3 652 633 127.5
B 0 155 60991 473.38 652 633 127.5
B 5 255 55952 433.86 652 633 127.5
C 15 214 246449 1641.65 639 646 149.7
C 0 10 186769 1243.06 639 646 149.7
C 0 207 139350 926.36 639 646 149.7
D 1 52 695078 4560.07 622 604 152.3
D 12 6 351771 2305.84 622 604 152.3
D 10 203 188192 1231.74 622 604 152.3

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