ASTROSAT CZTI

Data Quality Report

Orbit 52945

Creation date: 2025-07-17T10:19:36.476846
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/AS1A13_003T01_9000006486_52945cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_52945cztM0_level2_quad_clean.evt
Size (bytes)33,903,3604,158,720
Size32.3 MB 4.0 MB
Events in quadrant A296,99580
Events in quadrant B313,66849,231
Events in quadrant C329,9657,778
Events in quadrant D284,79636,621

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09690
B012810
C011150
D011880

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0130
C0140
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A133133100.000000%
B52000.000000%
C1984623.232323%
D48081.666667%

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 1165 145 91 91 7.81% 62.76%
B 1649 794 0 0 0.00% 0.00%
C 1210 321 28 28 2.31% 8.72%
D 1753 738 2 2 0.11% 0.27%

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 9 191 279887 144466.78 3 3 1.9
A 15 174 756 388.67 3 3 1.9
A 3 114 741 380.93 3 3 1.9
B 10 254 102840 8164.37 48 47 12.6
B 5 185 11172 883.61 48 47 12.6
B 4 156 1493 114.85 48 47 12.6
C 7 80 134465 22024.51 16 15 6.1
C 10 171 77718 12728.67 16 15 6.1
C 15 254 20744 3395.66 16 15 6.1
D 15 78 65907 4781.44 42 40 13.8
D 8 176 27759 2012.19 42 40 13.8
D 2 120 5244 377.77 42 40 13.8

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