ASTROSAT CZTI

Data Quality Report

Orbit 20201114_A09_038T45_9000003998_level2

Creation date: 2025-12-17T15:02:03.777542
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/AS1A09_038T45_9000003998cztM0_level2.fits modeM0/AS1A09_038T45_9000003998cztM0_level2_quad_clean.evt
Size (bytes)48,758,40021,752,640
Size46.5 MB 20.7 MB
Events in quadrant A294,19474,715
Events in quadrant B281,70276,828
Events in quadrant C285,78871,579
Events in quadrant D244,50663,619

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107210
B0109700
C0114500
D0144110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5291370.699301%
B5291490.926101%
C5291791.493101%
D52913767.106407%

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 5290 5290 0 0 0.00% 0.00%
B 5290 5290 0 0 0.00% 0.00%
C 5290 5290 0 0 0.00% 0.00%
D 5290 5275 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 29 257 8.8 76 72 21.0
A 7 110 255 8.71 76 72 21.0
A 9 19 233 7.66 76 72 21.0
B 2 9 230 9.56 74 71 16.6
B 14 254 221 9.01 74 71 16.6
B 14 253 196 7.51 74 71 16.6
C 9 209 199 6.05 75 70 21.3
C 2 191 197 5.95 75 70 21.3
C 12 241 194 5.81 75 70 21.3
D 3 14 200 6.78 69 63 20.2
D 4 246 190 6.28 69 63 20.2
D 7 3 181 5.84 69 63 20.2

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