ASTROSAT CZTI

Data Quality Report

Orbit 19787

Creation date: 2024-06-27T18:07:01.397640
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_117T01_9000002958_19787cztM0_level2.evt modeM0/AS1A05_117T01_9000002958_19787cztM0_level2_quad_clean.evt
Size (bytes)533,568,960111,706,560
Size508.9 MB 106.5 MB
Events in quadrant A3,140,257753,421
Events in quadrant B3,328,450774,433
Events in quadrant C4,977,796722,528
Events in quadrant D4,295,213702,936

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131122
B0137182
C0187372
D0168945

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6163250.405647%
B6163851.379198%
C61636119.914003%
D61622433.943525%

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 7548 6164 1 1 0.01% 0.02%
B 7548 6164 16 16 0.21% 0.26%
C 7548 6164 350 350 4.64% 5.68%
D 7547 6163 208 208 2.76% 3.37%

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 6 16 12145 69.68 810 794 162.9
A 8 192 8437 46.92 810 794 162.9
A 0 226 6935 37.7 810 794 162.9
B 7 220 83187 553.71 813 797 148.8
B 4 216 25913 168.79 813 797 148.8
B 12 111 17555 112.62 813 797 148.8
C 3 233 1834559 10316.65 774 782 177.7
C 14 238 120696 674.62 774 782 177.7
C 13 61 5338 25.63 774 782 177.7
D 1 52 938305 4945.81 787 767 189.6
D 12 218 192756 1012.8 787 767 189.6
D 2 184 148661 780.19 787 767 189.6

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