ASTROSAT CZTI

Data Quality Report

Orbit 20220201_A05_082T08_9000004900_level2

Creation date: 2022-02-04T10:33:05.059449
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_082T08_9000004900cztM0_level2_bc.evt modeM0/AS1A05_082T08_9000004900cztM0_level2_quad_clean.evt
Size (bytes)1,210,976,640313,220,160
Size1.1 GB 298.7 MB
Events in quadrant A5,012,6701,979,725
Events in quadrant B6,958,4532,002,472
Events in quadrant C7,715,0061,993,069
Events in quadrant D15,354,1721,862,008

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04860
B04860
C04860
D04860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0487620
B0564120
C0565380
D0844990

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23988350.145906%
B239885832.430382%
C239883721.550775%
D2398817207.170252%

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 33429 23991 0 0 0.00% 0.00%
B 33429 23988 54 54 0.16% 0.23%
C 33429 23988 73 73 0.22% 0.30%
D 33429 23989 194 194 0.58% 0.81%

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 78805 279.48 1260 1237 277.5
A 13 6 37893 132.07 1260 1237 277.5
A 13 254 36307 126.36 1260 1237 277.5
B 5 172 1051477 4227.95 1273 1248 248.4
B 3 32 190874 763.39 1273 1248 248.4
B 4 251 181162 724.29 1273 1248 248.4
C 14 254 1303290 4599.92 1250 1241 283.1
C 15 214 941145 3320.52 1250 1241 283.1
C 0 10 228696 803.56 1250 1241 283.1
D 8 195 3900294 13285.48 1220 1184 293.5
D 12 235 3031960 10326.8 1220 1184 293.5
D 10 118 1365857 4649.87 1220 1184 293.5

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