ASTROSAT CZTI

Data Quality Report

Orbit 09895

Creation date: 2024-06-27T15:52:02.080742
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/AS1G07_046T01_9000001408_09895cztM0_level2.evt modeM0/AS1G07_046T01_9000001408_09895cztM0_level2_quad_clean.evt
Size (bytes)680,451,840136,753,920
Size648.9 MB 130.4 MB
Events in quadrant A4,771,826862,667
Events in quadrant B5,058,545887,419
Events in quadrant C4,483,635880,635
Events in quadrant D5,622,748825,355

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02121137
B02172336
C02032946
D02317660

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02022
B02020
C02020
D02020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A98942152.173034%
B98941801.819284%
C9889870.879765%
D98893243.276368%

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 11730 9911 59 59 0.50% 0.60%
B 11730 9911 52 52 0.44% 0.52%
C 11730 9911 1 1 0.01% 0.01%
D 11730 9910 239 239 2.04% 2.41%

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 14 111 259156 1096.77 1154 1131 235.3
A 8 15 63754 266.19 1154 1131 235.3
A 15 239 11024 42.05 1154 1131 235.3
B 4 81 398849 1780.09 1162 1133 223.4
B 0 85 90626 400.55 1162 1133 223.4
B 0 229 28766 123.68 1162 1133 223.4
C 9 221 22886 81.9 1140 1144 265.5
C 10 22 15595 54.43 1140 1144 265.5
C 13 61 8144 26.37 1140 1144 265.5
D 1 52 677949 2322.62 1115 1092 291.4
D 8 195 458559 1569.79 1115 1092 291.4
D 2 16 100856 342.34 1115 1092 291.4

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