ASTROSAT CZTI

Data Quality Report

Orbit 45251

Creation date: 2024-06-27T23:11:28.790802
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_009T01_9000006060_45251cztM0_level2.fits modeM0/AS1A13_009T01_9000006060_45251cztM0_level2_quad_clean.evt
Size (bytes)1,062,132,480191,327,040
Size1012.9 MB 182.5 MB
Events in quadrant A10,668,2601,292,932
Events in quadrant B6,246,5821,361,134
Events in quadrant C6,275,9371,303,915
Events in quadrant D15,150,451961,733

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0407102
B0270182
C0276052
D05375310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126194253.367937%
B126191651.307552%
C126202211.751189%
D12617287622.794642%

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 13634 12620 138 138 1.01% 1.09%
B 13634 12619 63 63 0.46% 0.50%
C 13635 12621 113 113 0.83% 0.90%
D 13635 12619 2621 2621 19.22% 20.77%

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 10 83 4706283 16082.79 1412 1379 292.5
A 13 248 448270 1527.61 1412 1379 292.5
A 0 243 36373 119.62 1412 1379 292.5
B 12 3 198626 704.3 1422 1380 280.1
B 5 32 192366 681.94 1422 1380 280.1
B 12 16 42509 146.86 1422 1380 280.1
C 14 254 646020 1948.13 1398 1404 330.9
C 1 3 77545 230.11 1398 1404 330.9
C 12 250 25809 73.76 1398 1404 330.9
D 12 17 4050879 12576.95 1267 1227 322.0
D 13 249 2020461 6271.11 1267 1227 322.0
D 11 241 1601463 4969.83 1267 1227 322.0

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