ASTROSAT CZTI

Data Quality Report

Orbit 49783

Creation date: 2024-12-12T13:00:59.330805
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/AS1A13_037T01_9000006440_49783cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49783cztM0_level2_quad_clean.evt
Size (bytes)1,023,917,76047,266,560
Size976.5 MB 45.1 MB
Events in quadrant A10,828,690308,565
Events in quadrant B4,216,472646,610
Events in quadrant C7,349,37920,822
Events in quadrant D15,019,25816,455

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03651119
B0167354
C02631511
D04892325

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6278341654.412233%
B62814236.734596%
C6280611197.308917%
D6278614197.817776%

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 7306 6281 2475 2475 33.88% 39.40%
B 7306 6282 138 138 1.89% 2.20%
C 7305 6280 1006 1006 13.77% 16.02%
D 7306 6280 5033 5033 68.89% 80.14%

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 8 8 5827213 45292.16 498 485 128.6
A 15 63 836197 6496.13 498 485 128.6
A 6 250 419796 3259.38 498 485 128.6
B 4 171 579040 3943.04 686 665 146.7
B 1 207 229393 1559.34 686 665 146.7
B 4 206 141724 961.66 686 665 146.7
C 15 147 3754763 126963.62 68 66 29.6
C 15 148 1215978 41115.59 68 66 29.6
C 15 197 410222 13869.27 68 66 29.6
D 8 129 5653178 81720.62 202 192 69.2
D 15 142 4275405 61803.27 202 192 69.2
D 15 168 836925 12095.97 202 192 69.2

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