ASTROSAT CZTI

Data Quality Report

Orbit 19505

Creation date: 2024-06-27T18:03:35.626749
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_175T01_9000002894_19505cztM0_level2.evt modeM0/AS1A05_175T01_9000002894_19505cztM0_level2_quad_clean.evt
Size (bytes)1,270,232,640242,064,000
Size1.2 GB 230.9 MB
Events in quadrant A8,494,9731,543,634
Events in quadrant B9,431,5591,546,819
Events in quadrant C9,180,5491,495,063
Events in quadrant D10,101,9941,462,525

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0381154
B0405394
C0391414
D0432154

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18621820.440363%
B186223601.933197%
C186222051.100848%
D186225442.921276%

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 20431 18624 0 0 0.00% 0.00%
B 20432 18625 210 210 1.03% 1.13%
C 20432 18625 1 1 0.00% 0.01%
D 20432 18624 450 450 2.20% 2.42%

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 11 47 38534 82.31 2193 2148 442.1
A 0 226 18773 37.61 2193 2148 442.1
A 3 137 18368 36.69 2193 2148 442.1
B 3 64 731675 1752.56 2174 2114 416.3
B 12 111 51721 119.17 2174 2114 416.3
B 11 111 45394 103.97 2174 2114 416.3
C 3 233 392761 790.4 2111 2124 494.2
C 14 238 326126 655.57 2111 2124 494.2
C 9 221 194453 389.15 2111 2124 494.2
D 1 52 946808 1846.61 2115 2054 511.6
D 12 218 702355 1368.8 2115 2054 511.6
D 2 16 164607 317.72 2115 2054 511.6

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