ASTROSAT CZTI

Data Quality Report

Orbit 20210409_A10_102T04_9000004286_level2

Creation date: 2025-12-23T20:42:05.556354
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/AS1A10_102T04_9000004286cztM0_level2.fits modeM0/AS1A10_102T04_9000004286cztM0_level2_quad_clean.evt
Size (bytes)144,492,480116,254,080
Size137.8 MB 110.9 MB
Events in quadrant A891,620651,897
Events in quadrant B840,452648,695
Events in quadrant C849,278624,871
Events in quadrant D753,174552,981

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03040
B03040
C03040
D03040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0307890
B0454190
C0430010
D0401110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A151021190.787975%
B151022001.324328%
C151024873.224738%
D151026164.078930%

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 16397 15102 0 0 0.00% 0.00%
B 16397 15102 0 0 0.00% 0.00%
C 16397 15102 0 0 0.00% 0.00%
D 16397 15098 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 29 748 8.89 232 217 59.7
A 15 236 693 7.97 232 217 59.7
A 7 110 681 7.77 232 217 59.7
B 2 9 678 10.02 221 210 46.7
B 3 17 561 7.52 221 210 46.7
B 14 254 555 7.39 221 210 46.7
C 1 80 674 7.9 224 209 58.8
C 1 81 653 7.55 224 209 58.8
C 12 241 630 7.16 224 209 58.8
D 4 246 556 6.17 214 195 58.5
D 15 46 532 5.76 214 195 58.5
D 7 3 524 5.63 214 195 58.5

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