ASTROSAT CZTI

Data Quality Report

Orbit 30639

Creation date: 2024-06-27T20:18:02.573696
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_103T02_9000004416_30639cztM0_level2.evt modeM0/AS1A10_103T02_9000004416_30639cztM0_level2_quad_clean.evt
Size (bytes)734,535,360102,669,120
Size700.5 MB 97.9 MB
Events in quadrant A3,482,034681,480
Events in quadrant B5,476,892684,596
Events in quadrant C3,548,309667,352
Events in quadrant D9,283,453605,108

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145531
B0213501
C0145702
D0323051

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6752971.436611%
B67532093.094921%
C67521472.177133%
D675299714.765995%

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 8657 6754 39 39 0.45% 0.58%
B 8658 6755 66 66 0.76% 0.98%
C 8657 6754 9 9 0.10% 0.13%
D 8657 6754 1095 1095 12.65% 16.21%

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 0 13 200525 1188.83 842 825 168.0
A 8 192 25233 145.3 842 825 168.0
A 13 254 11936 66.14 842 825 168.0
B 6 159 1810488 11357.62 837 816 159.3
B 6 36 320606 2007.02 837 816 159.3
B 12 111 19535 117.48 837 816 159.3
C 14 238 134869 693.99 826 831 193.1
C 10 22 73965 378.66 826 831 193.1
C 3 233 64986 332.17 826 831 193.1
D 8 195 5549033 28880.46 798 779 192.1
D 12 33 255596 1326.41 798 779 192.1
D 10 253 250840 1301.65 798 779 192.1

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