ASTROSAT CZTI

Data Quality Report

Orbit 20160808_G05_215T01_9000000586_level2

Creation date: 2025-11-04T17:20:21.579873
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/AS1G05_215T01_9000000586cztM0_level2.fits modeM0/AS1G05_215T01_9000000586cztM0_level2_quad_clean.evt
Size (bytes)312,301,440306,797,760
Size297.8 MB 292.6 MB
Events in quadrant A2,009,7742,043,639
Events in quadrant B1,960,4902,066,242
Events in quadrant C1,995,7221,954,186
Events in quadrant D906,972653,546

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07660
B07660
C07660
D07660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0767890
B0786630
C0767790
D02594750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A374495161.377874%
B374495181.383215%
C374494681.249700%
D374492533567.652007%

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 42779 37451 0 0 0.00% 0.00%
B 42779 37448 0 0 0.00% 0.00%
C 42779 37448 0 0 0.00% 0.00%
D 42778 35680 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 1953 10.75 521 486 136.4
A 14 188 1917 10.49 521 486 136.4
A 7 110 1740 9.19 521 486 136.4
B 2 9 1749 11.64 516 488 108.3
B 12 226 1457 8.95 516 488 108.3
B 14 254 1369 8.13 516 488 108.3
C 1 80 1431 6.66 526 484 142.1
C 9 188 1423 6.6 526 484 142.1
C 1 81 1423 6.6 526 484 142.1
D 11 82 707 6.7 257 233 70.8
D 6 231 683 6.36 257 233 70.8
D 3 14 674 6.23 257 233 70.8

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