ASTROSAT CZTI

Data Quality Report

Orbit 06915

Creation date: 2024-06-27T15:13:02.871991
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/AS1A02_005T01_9000000948_06915cztM0_level2.evt modeM0/AS1A02_005T01_9000000948_06915cztM0_level2_quad_clean.evt
Size (bytes)392,322,24080,769,600
Size374.1 MB 77.0 MB
Events in quadrant A2,794,122508,524
Events in quadrant B2,926,740513,884
Events in quadrant C2,733,593508,602
Events in quadrant D3,010,273487,247

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124312
B0127291
C0124041
D0129941

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6126530.865165%
B6126651.061051%
C6126500.816193%
D6126731.191642%

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 7171 6127 0 0 0.00% 0.00%
B 7171 6127 1 1 0.01% 0.02%
C 7171 6127 0 0 0.00% 0.00%
D 7171 6127 18 18 0.25% 0.29%

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 13 14 11645 74.44 719 703 147.0
A 13 248 7511 46.32 719 703 147.0
A 0 226 7150 43.86 719 703 147.0
B 4 81 46124 329.8 719 701 137.7
B 4 173 39333 280.49 719 701 137.7
B 15 204 20035 140.38 719 701 137.7
C 9 247 20491 123.25 692 693 160.6
C 13 61 5556 30.27 692 693 160.6
C 8 128 5318 28.79 692 693 160.6
D 2 33 84984 492.64 696 674 171.1
D 8 195 78492 454.71 696 674 171.1
D 1 20 64291 371.73 696 674 171.1

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