ASTROSAT CZTI

Data Quality Report

Orbit 20161216_C02_002T01_9000000888_level2

Creation date: 2025-11-08T14:21:32.637406
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/AS1C02_002T01_9000000888cztM0_level2.fits modeM0/AS1C02_002T01_9000000888cztM0_level2_quad_clean.evt
Size (bytes)139,020,480137,448,000
Size132.6 MB 131.1 MB
Events in quadrant A824,642815,422
Events in quadrant B800,714807,944
Events in quadrant C818,682776,749
Events in quadrant D695,370691,786

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0322290
B0331810
C0321240
D0405830

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A155105393.475177%
B155105923.816892%
C155103352.159897%
D1551010386.692456%

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 16220 15510 0 0 0.00% 0.00%
B 16220 15511 0 0 0.00% 0.00%
C 16220 15511 0 0 0.00% 0.00%
D 16220 15500 0 0 0.00% 0.00%

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 14 188 815 10.79 213 198 57.2
A 0 29 753 9.7 213 198 57.2
A 7 110 725 9.21 213 198 57.2
B 2 9 748 11.62 211 198 47.3
B 3 17 568 7.82 211 198 47.3
B 12 226 563 7.71 211 198 47.3
C 12 241 603 6.76 216 198 59.9
C 9 188 586 6.48 216 198 59.9
C 3 126 550 5.88 216 198 59.9
D 4 246 585 7.36 198 178 55.3
D 3 14 582 7.31 198 178 55.3
D 1 19 512 6.04 198 178 55.3

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