ASTROSAT CZTI

Data Quality Report

Orbit 20180826_C03_015T04_9000002328_level2

Creation date: 2025-11-24T06:00:45.443441
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/AS1C03_015T04_9000002328cztM0_level2.fits modeM0/AS1C03_015T04_9000002328cztM0_level2_quad_clean.evt
Size (bytes)166,829,760208,771,200
Size159.1 MB 199.1 MB
Events in quadrant A1,023,4581,333,678
Events in quadrant B986,8241,359,220
Events in quadrant C991,0281,277,402
Events in quadrant D859,3061,160,339

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03520
B03520
C03520
D03520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0356350
B0360400
C0377270
D0410460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17290510.294968%
B17290990.572585%
C172901610.931174%
D172904172.411799%

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 21010 17290 0 0 0.00% 0.00%
B 21010 17291 0 0 0.00% 0.00%
C 21010 17290 0 0 0.00% 0.00%
D 21010 17285 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 0 29 1047 11.87 266 252 67.0
A 7 110 836 8.72 266 252 67.0
A 0 30 775 7.81 266 252 67.0
B 2 9 789 10.31 261 251 52.2
B 3 17 668 7.99 261 251 52.2
B 5 128 649 7.63 261 251 52.2
C 1 81 778 7.74 261 246 68.7
C 1 80 762 7.51 261 246 68.7
C 12 241 698 6.58 261 246 68.7
D 3 14 672 6.73 245 224 66.6
D 7 3 624 6.01 245 224 66.6
D 6 67 615 5.87 245 224 66.6

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