ASTROSAT CZTI

Data Quality Report

Orbit 20160209_P01_010T01_9000000318_level2

Creation date: 2025-10-27T17:25:33.573863
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/AS1P01_010T01_9000000318cztM0_level2.fits modeM0/AS1P01_010T01_9000000318cztM0_level2_quad_clean.evt
Size (bytes)2,000,223,360951,200,640
Size1.9 GB 907.1 MB
Events in quadrant A4,341,4882,581,328
Events in quadrant B13,648,1612,613,128
Events in quadrant C13,005,3912,483,995
Events in quadrant D10,513,3772,277,044

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140537533085736140535624892462
B1140537533085736140535624892462
C1140537533085736140535624892462
D1140537533085736140535624892462

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012435570
B012739250
C011656700
D010956320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A057830
B058480
C058450
D058430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A28214427350.969363%
B28275719820.700955%
C27414421030.767115%
D25763355222.143359%

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 472078 144877 0 0 0.00% 0.00%
B 1048573 408494 0 0 0.00% 0.00%
C 1048573 383321 0 0 0.00% 0.00%
D 1048573 355665 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 3997 11.27 1124 1052 261.4
A 7 110 3897 10.88 1124 1052 261.4
A 9 19 3091 7.8 1124 1052 261.4
B 2 9 10928 11.8 3617 3438 634.7
B 5 128 9001 8.76 3617 3438 634.7
B 14 254 8970 8.72 3617 3438 634.7
C 12 241 8911 6.98 3428 3172 822.4
C 2 127 8623 6.63 3428 3172 822.4
C 9 242 8480 6.45 3428 3172 822.4
D 1 19 7653 6.98 3002 2750 702.6
D 6 44 7592 6.89 3002 2750 702.6
D 11 82 7548 6.83 3002 2750 702.6

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