ASTROSAT CZTI

Data Quality Report

Orbit 20200304_A07_001T04_9000003552_level2

Creation date: 2025-12-09T21:07:06.120066
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/AS1A07_001T04_9000003552cztM0_level2.fits modeM0/AS1A07_001T04_9000003552cztM0_level2_quad_clean.evt
Size (bytes)87,992,640101,220,480
Size83.9 MB 96.5 MB
Events in quadrant A579,458684,565
Events in quadrant B542,494671,689
Events in quadrant C539,730627,756
Events in quadrant D378,848457,483

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186760
B0202380
C0192570
D0353380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A89801191.325167%
B89801892.104677%
C89802032.260579%
D8980266829.710468%

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 11365 8979 0 0 0.00% 0.00%
B 11365 8979 0 0 0.00% 0.00%
C 11365 8979 0 0 0.00% 0.00%
D 11365 8512 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 29 530 9.95 150 142 39.0
A 7 110 457 8.08 150 142 39.0
A 9 19 441 7.67 150 142 39.0
B 2 9 400 8.74 144 138 30.0
B 14 254 369 7.71 144 138 30.0
B 5 225 344 6.87 144 138 30.0
C 3 234 407 7.23 142 134 37.7
C 12 241 397 6.97 142 134 37.7
C 1 80 389 6.76 142 134 37.7
D 10 189 293 6.42 108 99 30.2
D 6 62 283 6.09 108 99 30.2
D 15 46 278 5.93 108 99 30.2

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