ASTROSAT CZTI

Data Quality Report

Orbit 20200808_A09_143T03_9000003794_level2

Creation date: 2025-12-14T05:33:29.632157
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_143T03_9000003794cztM0_level2.fits modeM0/AS1A09_143T03_9000003794cztM0_level2_quad_clean.evt
Size (bytes)548,487,360446,209,920
Size523.1 MB 425.5 MB
Events in quadrant A3,383,1482,549,168
Events in quadrant B3,274,6822,609,226
Events in quadrant C3,323,0182,416,539
Events in quadrant D2,963,2182,269,565

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01159200
B01128950
C01263810
D01159910

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010900
B010880
C010860
D010860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01130
B01130
C01130
D01130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A534506171.154350%
B534605000.935279%
C5345618403.442083%
D534416471.210681%

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 70445 53520 0 0 0.00% 0.00%
B 70444 53527 0 0 0.00% 0.00%
C 70445 53516 0 0 0.00% 0.00%
D 70445 53513 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 2790 9.11 881 825 215.7
A 0 29 2741 8.88 881 825 215.7
A 9 19 2519 7.85 881 825 215.7
B 2 9 2539 9.89 866 827 173.1
B 5 225 2232 8.12 866 827 173.1
B 2 8 2158 7.69 866 827 173.1
C 12 241 2286 6.56 877 821 223.2
C 3 126 2278 6.53 877 821 223.2
C 2 191 2238 6.35 877 821 223.2
D 6 231 2142 6.04 846 771 226.8
D 3 14 2115 5.92 846 771 226.8
D 10 189 2110 5.9 846 771 226.8

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