ASTROSAT CZTI

Data Quality Report

Orbit 41922

Creation date: 2024-06-27T22:34:31.158862
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_118T01_9000005718_41922cztM0_level2.fits modeM0/AS1T05_118T01_9000005718_41922cztM0_level2_quad_clean.evt
Size (bytes)688,127,04073,056,960
Size656.2 MB 69.7 MB
Events in quadrant A3,985,476586,089
Events in quadrant B4,411,214590,735
Events in quadrant C3,316,729578,680
Events in quadrant D13,345,09883,652

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151352
B0165762
C0129742
D0430002

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53273446.457668%
B532855810.472973%
C53272865.368876%
D5327462586.821851%

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 7240 5328 288 288 3.98% 5.41%
B 7241 5329 439 439 6.06% 8.24%
C 7240 5328 283 283 3.91% 5.31%
D 7240 5328 4502 4502 62.18% 84.50%

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 14 24 1147444 9662.93 581 570 118.7
A 10 83 531213 4470.91 581 570 118.7
A 2 79 41282 343.02 581 570 118.7
B 5 255 1862937 16918.69 575 559 110.1
B 0 229 139323 1260.6 575 559 110.1
B 0 190 85060 767.65 575 559 110.1
C 0 10 806651 6213.59 560 563 129.7
C 15 214 209289 1608.93 560 563 129.7
C 4 254 79484 608.35 560 563 129.7
D 12 79 11578171 188106.82 244 237 61.5
D 13 249 355892 5778.33 244 237 61.5
D 12 233 179254 2908.49 244 237 61.5

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