ASTROSAT CZTI

Data Quality Report

Orbit 40335

Creation date: 2024-06-27T22:15:03.919446
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/AS1A12_056T02_9000005538_40335cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40335cztM0_level2_quad_clean.evt
Size (bytes)368,755,20095,719,680
Size351.7 MB 91.3 MB
Events in quadrant A3,379,986643,934
Events in quadrant B3,370,345659,426
Events in quadrant C2,734,413635,197
Events in quadrant D3,719,105559,189

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137053
B0138182
C0115772
D0151132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5732861.500349%
B57321242.163294%
C573240.069784%
D57322875.006978%

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 7045 5733 59 59 0.84% 1.03%
B 7045 5733 98 98 1.39% 1.71%
C 7045 5733 2 2 0.03% 0.03%
D 7045 5733 282 282 4.00% 4.92%

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 10 83 503636 3842.29 637 625 130.9
A 13 248 350078 2669.32 637 625 130.9
A 2 79 23824 177.21 637 625 130.9
B 5 255 396396 3194.19 634 616 123.9
B 4 171 287108 2312.17 634 616 123.9
B 4 170 111786 897.21 634 616 123.9
C 15 214 262437 1789.83 627 631 146.3
C 4 254 12120 78.54 627 631 146.3
C 0 10 10378 66.64 627 631 146.3
D 1 47 493172 3268.98 612 596 150.7
D 12 227 481727 3193.03 612 596 150.7
D 12 128 119911 791.83 612 596 150.7

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