ASTROSAT CZTI

Data Quality Report

Orbit 55103

Creation date: 2025-12-04T20:29:55.350345
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_025T01_9000006530_55103cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55103cztM0_level2_quad_clean.evt
Size (bytes)470,105,280115,171,200
Size448.3 MB 109.8 MB
Events in quadrant A3,686,843750,844
Events in quadrant B3,599,361814,122
Events in quadrant C4,001,002713,823
Events in quadrant D5,484,540645,331

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171433
B0167780
C0179993
D0220641

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8100510.629630%
B8103150.185117%
C8101580.715961%
D81024515.566527%

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 8102 8101 43 43 0.53% 0.53%
B 8103 8103 7 7 0.09% 0.09%
C 8103 8102 46 46 0.57% 0.57%
D 8103 8103 383 383 4.73% 4.73%

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 0 8 222152 1033.25 867 845 214.2
A 7 14 73911 341.13 867 845 214.2
A 4 3 29834 135.35 867 845 214.2
B 5 185 55717 297.81 852 819 184.3
B 10 245 41829 222.47 852 819 184.3
B 5 172 33269 176.04 852 819 184.3
C 13 3 373743 1645.0 837 834 226.7
C 9 38 132755 581.94 837 834 226.7
C 6 223 97653 427.09 837 834 226.7
D 6 239 1221246 5312.59 819 786 229.7
D 12 6 178419 773.23 819 786 229.7
D 10 181 165010 714.86 819 786 229.7

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