ASTROSAT CZTI

Data Quality Report

Orbit 31245

Creation date: 2024-06-27T20:25:33.018422
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_073T02_9000004522_31245cztM0_level2.evt modeM0/AS1A10_073T02_9000004522_31245cztM0_level2_quad_clean.evt
Size (bytes)804,597,12097,174,080
Size767.3 MB 92.7 MB
Events in quadrant A3,517,416649,314
Events in quadrant B6,254,055631,699
Events in quadrant C3,810,368618,218
Events in quadrant D10,264,753506,210

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156421
B0242571
C0163141
D0359771

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7706170.220607%
B77062132.764080%
C7707831.076943%
D7707212627.585312%

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 8281 7707 0 0 0.00% 0.00%
B 8281 7707 91 91 1.10% 1.18%
C 8282 7708 6 6 0.07% 0.08%
D 8282 7708 2081 2081 25.13% 27.00%

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 14865 75.46 907 888 185.2
A 0 207 14122 71.45 907 888 185.2
A 3 137 9249 45.14 907 888 185.2
B 6 159 2200311 12804.94 890 866 171.8
B 0 190 323772 1879.93 890 866 171.8
B 4 80 139551 807.41 890 866 171.8
C 3 233 201060 974.61 863 868 205.4
C 14 238 139122 673.07 863 868 205.4
C 0 10 56511 270.89 863 868 205.4
D 8 195 7079112 34315.68 776 760 206.3
D 2 250 133993 645.91 776 760 206.3
D 12 233 69279 332.18 776 760 206.3

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