ASTROSAT CZTI

Data Quality Report

Orbit 20031

Creation date: 2024-06-27T18:10:20.178839
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/AS1A05_180T01_9000002986_20031cztM0_level2.evt modeM0/AS1A05_180T01_9000002986_20031cztM0_level2_quad_clean.evt
Size (bytes)509,186,88075,032,640
Size485.6 MB 71.6 MB
Events in quadrant A4,009,222468,357
Events in quadrant B3,677,176472,209
Events in quadrant C3,480,421449,519
Events in quadrant D3,828,142443,794

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158662
B0148152
C0140402
D0153122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62842163.437301%
B62841221.941439%
C62831061.687092%
D62831282.037243%

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 7554 6285 84 84 1.11% 1.34%
B 7554 6285 17 17 0.23% 0.27%
C 7553 6284 1 1 0.01% 0.02%
D 7553 6284 63 63 0.83% 1.00%

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 5 16 516437 2912.51 899 887 177.0
A 4 2 24357 132.59 899 887 177.0
A 13 254 8438 42.66 899 887 177.0
B 7 220 97018 578.84 889 870 166.1
B 0 189 42997 253.62 889 870 166.1
B 12 111 18684 107.25 889 870 166.1
C 14 238 137021 701.29 849 859 194.2
C 4 254 15924 77.59 849 859 194.2
C 3 233 15073 73.21 849 859 194.2
D 7 38 246853 1177.85 871 848 208.9
D 1 52 162425 773.62 871 848 208.9
D 13 249 57405 270.79 871 848 208.9

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