ASTROSAT CZTI

Data Quality Report

Orbit 37921

Creation date: 2024-06-27T21:46:09.385873
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/AS1T05_059T01_9000005354_37921cztM0_level2.evt modeM0/AS1T05_059T01_9000005354_37921cztM0_level2_quad_clean.evt
Size (bytes)427,340,16058,098,240
Size407.5 MB 55.4 MB
Events in quadrant A3,067,493353,284
Events in quadrant B3,545,461331,018
Events in quadrant C2,990,311345,917
Events in quadrant D2,940,152319,160

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125793
B0144072
C0123152
D0128332

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A586070.119454%
B58602924.982935%
C5860360.614334%
D5860490.836177%

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 8994 5862 5 5 0.06% 0.09%
B 8994 5862 211 211 2.35% 3.60%
C 8994 5862 22 22 0.24% 0.38%
D 8994 5862 52 52 0.58% 0.89%

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 372766 2753.83 663 647 135.1
A 15 222 87181 640.39 663 647 135.1
A 12 189 15177 107.53 663 647 135.1
B 5 172 671401 5397.26 646 630 124.3
B 0 229 152464 1221.71 646 630 124.3
B 0 230 77407 617.78 646 630 124.3
C 15 214 246125 1631.11 645 649 150.5
C 0 10 128160 847.27 645 649 150.5
C 14 67 60100 395.03 645 649 150.5
D 10 199 68006 427.49 646 628 157.6
D 2 249 60924 382.56 646 628 157.6
D 13 249 58861 369.47 646 628 157.6

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