ASTROSAT CZTI

Data Quality Report

Orbit 27348

Creation date: 2024-06-27T19:39:09.628395
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/AS1T03_255T01_9000003922_27348cztM0_level2.evt modeM0/AS1T03_255T01_9000003922_27348cztM0_level2_quad_clean.evt
Size (bytes)595,491,840107,498,880
Size567.9 MB 102.5 MB
Events in quadrant A3,714,637708,666
Events in quadrant B4,161,707704,830
Events in quadrant C4,347,170661,631
Events in quadrant D5,291,090646,943

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159720
B0172680
C0177970
D0209170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7658510.665970%
B76582303.003395%
C76582663.473492%
D76584405.745625%

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 7923 7659 1 1 0.01% 0.01%
B 7923 7659 94 94 1.19% 1.23%
C 7923 7659 122 122 1.54% 1.59%
D 7923 7659 322 322 4.06% 4.20%

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 12 189 31433 159.45 948 930 191.3
A 13 254 13461 65.51 948 930 191.3
A 13 248 13136 63.81 948 930 191.3
B 5 172 353809 1989.64 934 909 177.4
B 0 190 40114 221.03 934 909 177.4
B 0 229 35178 193.2 934 909 177.4
C 2 16 696109 3333.84 886 892 208.5
C 14 238 139935 666.77 886 892 208.5
C 15 208 48217 226.94 886 892 208.5
D 1 52 1256441 5591.28 874 853 224.6
D 7 38 273279 1213.14 874 853 224.6
D 2 250 253610 1125.56 874 853 224.6

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