ASTROSAT CZTI

Data Quality Report

Orbit 53987

Creation date: 2025-09-20T17:46:06.928531
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/AS1A14_041T01_9000006510_53987cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_53987cztM0_level2_quad_clean.evt
Size (bytes)294,926,40040,872,960
Size281.3 MB 39.0 MB
Events in quadrant A1,784,822283,430
Events in quadrant B1,802,891304,972
Events in quadrant C1,697,173276,843
Events in quadrant D5,379,273142,792

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A077370
B078410
C074650
D0182400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3231932.878366%
B32311514.673476%
C3232150.464109%
D3232151646.905941%

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 3231 3231 77 77 2.38% 2.38%
B 3231 3231 114 114 3.53% 3.53%
C 3232 3232 19 19 0.59% 0.59%
D 3231 3231 1443 1443 44.66% 44.66%

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 13 248 146799 1820.09 321 312 80.5
A 0 8 126584 1568.92 321 312 80.5
A 15 174 101630 1258.87 321 312 80.5
B 5 185 324668 4699.58 314 303 69.0
B 10 245 90741 1310.31 314 303 69.0
B 2 249 46944 675.76 314 303 69.0
C 4 5 313660 3680.77 307 304 85.1
C 12 249 28442 330.52 307 304 85.1
C 9 53 19605 226.72 307 304 85.1
D 8 176 2767472 43306.77 221 212 63.9
D 2 165 1294728 20258.78 221 212 63.9
D 5 113 127250 1988.11 221 212 63.9

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