ASTROSAT CZTI

Data Quality Report

Orbit 22422

Creation date: 2024-06-27T18:40:55.568332
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/AS1T03_149T04_9000003322_22422cztM0_level2.evt modeM0/AS1T03_149T04_9000003322_22422cztM0_level2_quad_clean.evt
Size (bytes)257,446,08039,902,400
Size245.5 MB 38.1 MB
Events in quadrant A1,692,204243,649
Events in quadrant B1,797,307253,779
Events in quadrant C1,771,309239,032
Events in quadrant D2,305,642232,713

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070631
B073431
C071931
D090831

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3362110.327186%
B3362320.951814%
C3362461.368233%
D33623239.607377%

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 4747 3363 0 0 0.00% 0.00%
B 4747 3363 5 5 0.11% 0.15%
C 4747 3363 8 8 0.17% 0.24%
D 4747 3363 289 289 6.09% 8.59%

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 2 79 8674 93.53 436 426 88.2
A 13 254 4476 45.92 436 426 88.2
A 0 226 3747 37.66 436 426 88.2
B 3 64 40055 476.72 438 428 83.1
B 4 173 37099 441.16 438 428 83.1
B 12 111 9754 112.19 438 428 83.1
C 14 238 67926 676.59 424 427 99.8
C 0 10 23990 236.19 424 427 99.8
C 10 22 20467 200.87 424 427 99.8
D 1 52 748887 7645.18 405 392 97.9
D 13 172 15159 150.83 405 392 97.9
D 2 234 13156 130.37 405 392 97.9

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