ASTROSAT CZTI

Data Quality Report

Orbit 12813

Creation date: 2024-06-27T16:32:40.477101
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/AS1G08_071T01_9000001888_12813cztM0_level2.evt modeM0/AS1G08_071T01_9000001888_12813cztM0_level2_quad_clean.evt
Size (bytes)512,271,360101,240,640
Size488.5 MB 96.6 MB
Events in quadrant A3,419,404647,929
Events in quadrant B4,397,442643,266
Events in quadrant C3,282,325652,917
Events in quadrant D3,923,860618,329

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151314
B0179643
C0148043
D0166863

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7226290.401329%
B72263204.428453%
C7226360.498201%
D72261642.269582%

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 7692 7228 0 0 0.00% 0.00%
B 7692 7228 142 142 1.85% 1.96%
C 7692 7228 0 0 0.00% 0.00%
D 7692 7228 124 124 1.61% 1.72%

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 107532 615.87 857 837 173.2
A 8 15 14537 79.08 857 837 173.2
A 0 226 7662 39.4 857 837 173.2
B 4 239 506693 3116.93 849 828 162.3
B 0 219 265510 1630.86 849 828 162.3
B 15 201 147234 902.09 849 828 162.3
C 13 61 6138 27.05 841 845 195.7
C 8 222 2019 6.0 841 845 195.7
C 3 202 2007 5.94 841 845 195.7
D 1 52 450040 2233.38 825 799 201.1
D 8 195 287870 1427.16 825 799 201.1
D 13 172 33347 161.81 825 799 201.1

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