ASTROSAT CZTI

Data Quality Report

Orbit 12597

Creation date: 2024-06-27T16:29:47.022572
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/AS1G08_071T01_9000001874_12597cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12597cztM0_level2_quad_clean.evt
Size (bytes)1,376,020,800250,185,600
Size1.3 GB 238.6 MB
Events in quadrant A8,772,6831,567,258
Events in quadrant B10,562,0401,606,794
Events in quadrant C8,888,9811,599,304
Events in quadrant D12,153,5161,483,316

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03880
B03880
C03880
D03880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0394684
B0445093
C0401213
D0501443

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A191653091.612314%
B191654522.358466%
C191651690.881816%
D1916511145.812679%

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 20366 19170 0 0 0.00% 0.00%
B 20366 19167 74 74 0.36% 0.39%
C 20366 19170 18 18 0.09% 0.09%
D 20366 19170 887 887 4.36% 4.63%

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 12 189 62930 131.85 2258 2206 460.6
A 0 226 20114 38.88 2258 2206 460.6
A 12 194 17403 33.0 2258 2206 460.6
B 3 64 1002398 2337.37 2259 2202 427.9
B 4 239 485266 1128.88 2259 2202 427.9
B 0 214 96263 219.81 2259 2202 427.9
C 14 234 196146 381.56 2203 2210 508.3
C 15 208 110968 213.97 2203 2210 508.3
C 13 61 15930 26.99 2203 2210 508.3
D 1 52 1958226 3859.76 2125 2060 506.8
D 10 157 1483845 2923.74 2125 2060 506.8
D 10 199 452941 889.64 2125 2060 506.8

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