ASTROSAT CZTI

Data Quality Report

Orbit 20180814_G08_028T01_9000002306_level2

Creation date: 2025-11-24T02:35:11.845877
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_028T01_9000002306cztM0_level2.fits modeM0/AS1G08_028T01_9000002306cztM0_level2_quad_clean.evt
Size (bytes)271,370,880279,429,120
Size258.8 MB 266.5 MB
Events in quadrant A1,681,0501,746,856
Events in quadrant B1,607,1501,735,807
Events in quadrant C1,606,7061,607,848
Events in quadrant D1,422,4941,471,652

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0580530
B0603480
C0640940
D0688430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05660
B05660
C05660
D05660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A276275782.092156%
B276277662.772650%
C2762715715.686466%
D2762712134.390632%

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 30742 27624 0 0 0.00% 0.00%
B 30742 27622 0 0 0.00% 0.00%
C 30742 27625 0 0 0.00% 0.00%
D 30741 27622 0 0 0.00% 0.00%

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 0 29 1599 11.01 437 410 108.0
A 7 110 1334 8.55 437 410 108.0
A 15 236 1293 8.17 437 410 108.0
B 2 9 1271 9.96 424 404 87.1
B 2 8 1100 7.99 424 404 87.1
B 5 232 1082 7.79 424 404 87.1
C 2 191 1081 6.16 425 396 111.1
C 12 241 1054 5.92 425 396 111.1
C 9 233 1049 5.87 425 396 111.1
D 3 14 1019 5.94 406 370 109.2
D 10 189 992 5.7 406 370 109.2
D 7 3 989 5.67 406 370 109.2

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