ASTROSAT CZTI

Data Quality Report

Orbit 22617

Creation date: 2024-06-27T18:43:37.311545
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/AS1A07_049T01_9000003358_22617cztM0_level2.evt modeM0/AS1A07_049T01_9000003358_22617cztM0_level2_quad_clean.evt
Size (bytes)875,450,880156,798,720
Size834.9 MB 149.5 MB
Events in quadrant A6,189,347970,762
Events in quadrant B6,395,738982,238
Events in quadrant C6,337,020945,222
Events in quadrant D6,688,104929,669

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02740
B02740
C02740
D02740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0271233
B0274763
C0273373
D0287523

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A133241040.780546%
B133251511.133208%
C133251801.350844%
D133251290.968105%

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 15055 13327 0 0 0.00% 0.00%
B 15056 13328 5 5 0.03% 0.04%
C 15056 13328 0 0 0.00% 0.00%
D 15056 13328 41 41 0.27% 0.31%

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 13 254 21613 61.93 1605 1569 323.7
A 3 137 14052 38.57 1605 1569 323.7
A 0 226 13795 37.77 1605 1569 323.7
B 12 111 38938 121.52 1601 1563 307.6
B 0 190 34224 106.19 1601 1563 307.6
B 11 111 33764 104.7 1601 1563 307.6
C 14 238 243056 665.67 1546 1556 362.8
C 10 22 30964 81.06 1546 1556 362.8
C 10 222 18504 46.71 1546 1556 362.8
D 1 52 294231 772.15 1561 1517 379.1
D 2 136 209927 549.77 1561 1517 379.1
D 12 233 148818 388.57 1561 1517 379.1

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