ASTROSAT CZTI

Data Quality Report

Orbit 20160417_G05_238T02_9000000420_level2

Creation date: 2025-10-29T00:00:34.386856
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/AS1G05_238T02_9000000420cztM0_level2.fits modeM0/AS1G05_238T02_9000000420cztM0_level2_quad_clean.evt
Size (bytes)774,285,120858,859,200
Size738.4 MB 819.1 MB
Events in quadrant A4,522,5925,202,428
Events in quadrant B4,479,9165,320,996
Events in quadrant C4,428,6884,710,145
Events in quadrant D3,891,9804,657,142

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02441510
B02030940
C02452000
D02134100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018260
B018260
C018260
D018260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04750
B04750
C04750
D04750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8926649545.549705%
B893096140.687501%
C8930961866.926514%
D8930915731.761301%

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 151728 89217 0 0 0.00% 0.00%
B 151729 89300 0 0 0.00% 0.00%
C 151729 89269 0 0 0.00% 0.00%
D 151729 89261 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 4394 11.01 1176 1100 299.1
A 7 110 3994 9.67 1176 1100 299.1
A 9 19 3462 7.89 1176 1100 299.1
B 2 9 4007 12.34 1187 1131 233.0
B 5 128 3338 9.47 1187 1131 233.0
B 12 226 3245 9.07 1187 1131 233.0
C 1 81 3376 7.37 1170 1086 310.6
C 1 80 3354 7.3 1170 1086 310.6
C 9 188 3086 6.44 1170 1086 310.6
D 3 14 3002 6.8 1113 1011 292.6
D 6 44 2970 6.69 1113 1011 292.6
D 6 231 2907 6.48 1113 1011 292.6

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