ASTROSAT CZTI

Data Quality Report

Orbit 42853

Creation date: 2024-06-27T22:45:00.843516
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_138T01_9000005828_42853cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42853cztM0_level2_quad_clean.evt
Size (bytes)294,986,88082,068,480
Size281.3 MB 78.3 MB
Events in quadrant A2,687,399547,948
Events in quadrant B2,855,255546,524
Events in quadrant C2,430,913552,164
Events in quadrant D2,562,640493,937

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109622
B0119806
C0102422
D0112212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4913160.325667%
B49122244.560261%
C491270.142508%
D4912631.282573%

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 7006 4914 8 8 0.11% 0.16%
B 7005 4913 193 193 2.76% 3.93%
C 7005 4913 3 3 0.04% 0.06%
D 7005 4913 60 60 0.86% 1.22%

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 522113 4694.96 536 525 111.1
A 15 237 36140 320.58 536 525 111.1
A 12 189 32173 284.87 536 525 111.1
B 4 81 689881 6713.4 529 514 102.7
B 5 255 40215 386.63 529 514 102.7
B 4 171 15702 147.91 529 514 102.7
C 15 214 200281 1601.93 529 533 124.7
C 14 254 66394 528.19 529 533 124.7
C 0 239 46496 368.61 529 533 124.7
D 1 52 288935 2247.57 520 505 128.3
D 2 249 140046 1087.36 520 505 128.3
D 12 233 32712 250.97 520 505 128.3

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