ASTROSAT CZTI

Data Quality Report

Orbit 26493

Creation date: 2024-06-27T19:29:46.141115
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/AS1A09_120T02_9000003834_26493cztM0_level2.evt modeM0/AS1A09_120T02_9000003834_26493cztM0_level2_quad_clean.evt
Size (bytes)284,019,84063,426,240
Size270.9 MB 60.5 MB
Events in quadrant A1,407,013440,758
Events in quadrant B1,455,243446,806
Events in quadrant C1,556,846426,669
Events in quadrant D3,968,538383,599

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A062870
B063070
C065010
D0139860

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A312630.095969%
B312640.127959%
C3126130.415867%
D312650916.282790%

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 3126 3126 0 0 0.00% 0.00%
B 3126 3126 0 0 0.00% 0.00%
C 3126 3126 1 1 0.03% 0.03%
D 3126 3126 538 538 17.21% 17.21%

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 13 254 4940 60.71 365 359 75.5
A 3 137 3167 37.22 365 359 75.5
A 0 226 2998 34.98 365 359 75.5
B 0 219 10301 137.49 368 361 72.3
B 12 111 8161 107.89 368 361 72.3
B 0 229 7605 100.2 368 361 72.3
C 3 233 113914 1324.25 354 358 85.8
C 14 238 57356 664.69 354 358 85.8
C 4 254 4882 52.76 354 358 85.8
D 1 52 1814773 22097.18 335 328 82.1
D 7 80 600770 7312.47 335 328 82.1
D 12 233 272582 3315.64 335 328 82.1

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