ASTROSAT CZTI

Data Quality Report

Orbit 50629

Creation date: 2025-02-06T14:31:23.822695
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_239T01_9000006444_50629cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50629cztM0_level2_quad_clean.evt
Size (bytes)543,821,76064,209,600
Size518.6 MB 61.2 MB
Events in quadrant A2,829,628452,197
Events in quadrant B6,968,965391,669
Events in quadrant C6,511,524335,275
Events in quadrant D3,429,415411,163

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012722757
B0265312327
C0249312111
D0149121121

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01117
B011212
C01106
D011210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50841122.202990%
B5001138527.694461%
C5003154630.901459%
D50521492.949327%

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 7323 5122 81 81 1.11% 1.58%
B 7299 5052 727 727 9.96% 14.39%
C 7290 5052 1456 1456 19.97% 28.82%
D 7297 5098 157 157 2.15% 3.08%

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 12 250 359818 2700.18 530 515 133.1
A 4 3 112094 838.52 530 515 133.1
A 3 114 64398 480.08 530 515 133.1
B 4 170 4560099 42884.25 486 469 106.3
B 5 185 159578 1496.45 486 469 106.3
B 8 128 63358 591.48 486 469 106.3
C 15 174 3948332 32394.49 438 435 121.9
C 0 161 101140 826.34 438 435 121.9
C 13 3 95714 781.81 438 435 121.9
D 4 115 389196 2772.7 500 483 140.2
D 15 169 159044 1131.02 500 483 140.2
D 7 60 108653 771.58 500 483 140.2

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