ASTROSAT CZTI

Data Quality Report

Orbit 55625

Creation date: 2026-01-09T21:14:25.138257
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_021T06_9000006538_55625cztM0_level2.fits modeM0/AS1A14_021T06_9000006538_55625cztM0_level2_quad_clean.evt
Size (bytes)564,382,080105,266,880
Size538.2 MB 100.4 MB
Events in quadrant A6,204,143678,827
Events in quadrant B3,315,243756,860
Events in quadrant C5,159,748623,544
Events in quadrant D5,623,859600,092

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0238990
B0155860
C0208670
D0220550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75874395.786213%
B7588190.250395%
C75885126.747496%
D75884475.890880%

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 7586 7586 362 362 4.77% 4.77%
B 7588 7588 9 9 0.12% 0.12%
C 7588 7588 458 458 6.04% 6.04%
D 7588 7588 450 450 5.93% 5.93%

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 12 115 2028963 10498.98 773 752 193.2
A 8 249 499077 2579.57 773 752 193.2
A 15 32 299536 1546.65 773 752 193.2
B 5 185 55811 333.99 772 744 164.9
B 7 252 40222 239.44 772 744 164.9
B 4 169 34127 202.47 772 744 164.9
C 15 148 1403951 6981.7 735 727 201.0
C 13 3 487031 2419.59 735 727 201.0
C 12 2 221228 1097.1 735 727 201.0
D 11 129 1479800 7087.94 743 709 208.7
D 8 245 773614 3703.83 743 709 208.7
D 0 176 192102 917.17 743 709 208.7

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