ASTROSAT CZTI

Data Quality Report

Orbit 21004

Creation date: 2024-06-27T18:22:15.999473
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_072T04_9000003094_21004cztM0_level2.evt modeM0/AS1A05_072T04_9000003094_21004cztM0_level2_quad_clean.evt
Size (bytes)458,444,16065,805,120
Size437.2 MB 62.8 MB
Events in quadrant A3,047,720406,879
Events in quadrant B3,456,635404,861
Events in quadrant C3,825,291372,695
Events in quadrant D3,138,327380,226

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126801
B0138451
C0150801
D0131471

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6125881.436735%
B61261792.921972%
C61263115.076722%
D6126580.946784%

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 7320 6126 0 0 0.00% 0.00%
B 7321 6127 30 30 0.41% 0.49%
C 7321 6127 103 103 1.41% 1.68%
D 7321 6127 17 17 0.23% 0.28%

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 0 226 6679 37.07 793 777 159.2
A 3 137 6341 34.95 793 777 159.2
A 12 194 5591 30.24 793 777 159.2
B 7 220 230440 1541.6 789 772 149.0
B 0 189 84913 564.78 789 772 149.0
B 4 216 17566 112.73 789 772 149.0
C 9 54 765895 4450.15 744 747 171.9
C 14 238 118859 686.95 744 747 171.9
C 10 91 39182 223.54 744 747 171.9
D 1 52 170174 910.64 760 737 186.1
D 13 104 36935 194.55 760 737 186.1
D 7 238 32083 168.47 760 737 186.1

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