ASTROSAT CZTI

Data Quality Report

Orbit 20190316_A05_226T06_9000002800_level2

Creation date: 2025-11-28T20:05:41.026673
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/AS1A05_226T06_9000002800cztM0_level2.fits modeM0/AS1A05_226T06_9000002800cztM0_level2_quad_clean.evt
Size (bytes)232,162,560199,350,720
Size221.4 MB 190.1 MB
Events in quadrant A1,452,1681,179,449
Events in quadrant B1,376,5201,170,990
Events in quadrant C1,388,7981,094,095
Events in quadrant D1,238,0801,016,114

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0478190
B0532280
C0511840
D0485430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04680
B04680
C04680
D04680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A228911950.851863%
B228914822.105631%
C228914341.895942%
D228912451.070290%

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 27041 22890 0 0 0.00% 0.00%
B 27041 22890 0 0 0.00% 0.00%
C 27041 22890 0 0 0.00% 0.00%
D 27041 22879 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 7 110 1156 8.32 379 356 96.1
A 0 29 1138 8.14 379 356 96.1
A 9 19 1116 7.91 379 356 96.1
B 2 9 1097 10.21 363 347 73.4
B 5 128 894 7.45 363 347 73.4
B 2 8 887 7.35 363 347 73.4
C 1 81 1033 7.24 366 342 95.3
C 1 80 1029 7.2 366 342 95.3
C 2 191 956 6.44 366 342 95.3
D 10 190 943 6.62 352 322 93.8
D 6 67 895 6.11 352 322 93.8
D 1 19 880 5.95 352 322 93.8

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