ASTROSAT CZTI

Data Quality Report

Orbit 44225

Creation date: 2024-06-27T23:00:42.343411
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_071T06_9000005972_44225cztM0_level2.fits modeM0/AS1A13_071T06_9000005972_44225cztM0_level2_quad_clean.evt
Size (bytes)596,643,840104,875,200
Size569.0 MB 100.0 MB
Events in quadrant A6,167,182727,297
Events in quadrant B5,562,293666,859
Events in quadrant C3,183,681725,812
Events in quadrant D6,659,110593,564

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233472
B0209582
C0140812
D0243413

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66243725.615942%
B662495614.432367%
C6624610.920894%
D662399114.963008%

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 7719 6625 166 166 2.15% 2.51%
B 7719 6624 614 614 7.95% 9.27%
C 7719 6625 12 12 0.16% 0.18%
D 7718 6624 817 817 10.59% 12.33%

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 1601062 10130.97 760 743 158.0
A 15 223 1490122 9428.65 760 743 158.0
A 2 79 106522 669.64 760 743 158.0
B 0 200 2119655 15125.75 716 694 140.1
B 0 219 162586 1155.63 716 694 140.1
B 5 172 151735 1078.17 716 694 140.1
C 14 254 102589 574.79 752 755 177.2
C 4 254 100055 560.49 752 755 177.2
C 3 233 40926 226.74 752 755 177.2
D 13 249 1906888 10609.14 714 690 179.7
D 1 52 767339 4266.87 714 690 179.7
D 2 249 346494 1924.61 714 690 179.7

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