ASTROSAT CZTI

Data Quality Report

Orbit 30537

Creation date: 2024-06-27T20:16:26.827886
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/AS1A10_053T13_9000004394_30537cztM0_level2.evt modeM0/AS1A10_053T13_9000004394_30537cztM0_level2_quad_clean.evt
Size (bytes)516,588,48092,292,480
Size492.7 MB 88.0 MB
Events in quadrant A3,157,024594,926
Events in quadrant B5,257,766587,836
Events in quadrant C3,361,991577,801
Events in quadrant D3,419,329572,934

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135021
B0205161
C0140211
D0142421

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6620280.422961%
B66211632.461864%
C6621991.495242%
D6621200.302069%

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 7570 6621 0 0 0.00% 0.00%
B 7571 6622 59 59 0.78% 0.89%
C 7571 6622 8 8 0.11% 0.12%
D 7571 6622 1 1 0.01% 0.02%

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 12845 73.69 814 799 163.5
A 8 192 11265 64.02 814 799 163.5
A 3 137 8037 44.28 814 799 163.5
B 6 159 1793707 11617.44 796 772 154.3
B 4 171 159693 1029.74 796 772 154.3
B 6 36 77000 493.92 796 772 154.3
C 14 238 125526 673.72 785 789 185.1
C 10 22 81098 433.76 785 789 185.1
C 3 233 51540 274.11 785 789 185.1
D 8 195 310963 1625.06 799 778 190.9
D 13 104 50441 260.19 799 778 190.9
D 2 234 30524 155.84 799 778 190.9

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