ASTROSAT CZTI

Data Quality Report

Orbit 28474

Creation date: 2024-06-27T19:52:08.014749
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/AS1A10_050T06_9000004092_28474cztM0_level2.evt modeM0/AS1A10_050T06_9000004092_28474cztM0_level2_quad_clean.evt
Size (bytes)645,287,040112,927,680
Size615.4 MB 107.7 MB
Events in quadrant A4,141,792751,823
Events in quadrant B5,386,305739,599
Events in quadrant C3,720,976727,471
Events in quadrant D5,808,236702,041

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170822
B0207362
C0155692
D0221542

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71631832.554795%
B71637119.926009%
C71631401.954488%
D71634205.863465%

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 9604 7164 56 56 0.58% 0.78%
B 9604 7163 475 475 4.95% 6.63%
C 9604 7163 0 0 0.00% 0.00%
D 9604 7165 401 401 4.18% 5.60%

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 96 288788 1543.29 937 921 186.5
A 15 174 234922 1254.5 937 921 186.5
A 13 254 11406 56.21 937 921 186.5
B 10 246 1268618 7395.99 906 885 171.4
B 10 245 554261 3228.41 906 885 171.4
B 12 111 21913 122.68 906 885 171.4
C 14 238 145663 685.93 900 909 211.0
C 3 233 36243 167.43 900 909 211.0
C 7 247 24905 113.71 900 909 211.0
D 1 52 1317808 6283.2 886 865 209.6
D 8 195 1101175 5249.63 886 865 209.6
D 2 234 23334 107.2 886 865 209.6

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