ASTROSAT CZTI

Data Quality Report

Orbit 42801

Creation date: 2024-06-27T22:44:23.438981
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/AS1A05_013T01_9000005822_42801cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42801cztM0_level2_quad_clean.evt
Size (bytes)936,783,360254,957,760
Size893.4 MB 243.1 MB
Events in quadrant A8,665,5691,711,123
Events in quadrant B8,032,6251,691,394
Events in quadrant C7,756,5751,698,175
Events in quadrant D9,016,7651,545,612

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0346333
B0345633
C0323823
D0373434

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15554730.469333%
B155542151.382281%
C15555380.244294%
D155544452.861000%

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 19642 15557 47 47 0.24% 0.30%
B 19642 15557 181 181 0.92% 1.16%
C 19643 15558 34 34 0.17% 0.22%
D 19642 15557 430 430 2.19% 2.76%

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 1507290 4287.39 1729 1697 351.2
A 13 248 386224 1094.99 1729 1697 351.2
A 15 223 35600 96.54 1729 1697 351.2
B 5 255 942350 2829.87 1700 1648 332.4
B 5 172 141621 421.07 1700 1648 332.4
B 15 85 135387 402.32 1700 1648 332.4
C 15 214 626414 1594.71 1685 1701 391.7
C 3 233 255460 647.77 1685 1701 391.7
C 14 254 211126 534.6 1685 1701 391.7
D 2 249 752739 1832.49 1679 1635 409.9
D 5 171 718166 1748.14 1679 1635 409.9
D 13 249 346601 841.62 1679 1635 409.9

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