ASTROSAT CZTI

Data Quality Report

Orbit 35851

Creation date: 2022-06-08T18:16:47.726736
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/AS1A11_080T01_9000005146_35851cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35851cztM0_level2_quad_clean.evt
Size (bytes)218,969,28040,020,480
Size208.8 MB 38.2 MB
Events in quadrant A1,559,143260,040
Events in quadrant B1,561,649258,935
Events in quadrant C1,638,105251,758
Events in quadrant D1,680,799241,327

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0181
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08931
B09031
C09737
D09634

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A099043681
B0102533974
C099623518
D0108154109

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A278350.179662%
B2778180.647948%
C2824582.053824%
D2761481.738501%

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 6569 3011 0 0 0.00% 0.00%
B 7007 3003 16 16 0.23% 0.53%
C 6343 3042 51 51 0.80% 1.68%
D 6426 2988 48 48 0.75% 1.61%

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 97400 1335.38 350 344 72.7
A 10 83 83709 1147.01 350 344 72.7
A 8 144 12644 169.23 350 344 72.7
B 0 213 81319 1198.02 345 338 67.6
B 5 172 72720 1070.81 345 338 67.6
B 4 81 19548 284.19 345 338 67.6
C 15 214 118800 1476.7 341 345 80.2
C 0 10 100863 1253.09 341 345 80.2
C 9 69 78922 979.57 341 345 80.2
D 7 223 214939 2565.54 336 326 83.7
D 8 195 81379 968.93 336 326 83.7
D 13 153 20808 244.85 336 326 83.7

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