ASTROSAT CZTI

Data Quality Report

Orbit 39571

Creation date: 2024-06-27T22:06:17.061564
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_018T01_9000005488_39571cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39571cztM0_level2_quad_clean.evt
Size (bytes)1,490,371,200225,446,400
Size1.4 GB 215.0 MB
Events in quadrant A11,030,8241,623,292
Events in quadrant B6,945,3861,708,220
Events in quadrant C22,870,7331,161,433
Events in quadrant D13,132,4261,269,466

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430873
B0319852
C0785022
D0499242

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A154043232.096858%
B15404810.525837%
C15404474630.810179%
D15404214713.937938%

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 19640 15407 280 280 1.43% 1.82%
B 19640 15407 51 51 0.26% 0.33%
C 19640 15407 4348 4348 22.14% 28.22%
D 19640 15407 1778 1778 9.05% 11.54%

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 15 222 3170231 9562.93 1635 1600 331.3
A 10 83 1061476 3198.71 1635 1600 331.3
A 13 248 272716 818.23 1635 1600 331.3
B 5 172 269373 853.04 1637 1589 313.9
B 5 255 165902 523.42 1637 1589 313.9
B 12 111 40266 123.21 1637 1589 313.9
C 9 187 14308939 44862.91 1380 1388 318.9
C 15 208 2208355 6920.19 1380 1388 318.9
C 15 214 547317 1711.82 1380 1388 318.9
D 12 227 6073516 16436.02 1515 1471 369.4
D 12 233 611143 1650.28 1515 1471 369.4
D 13 249 165323 443.52 1515 1471 369.4

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