ASTROSAT CZTI

Data Quality Report

Orbit 25675

Creation date: 2024-06-27T19:20:17.362673
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/AS1A09_043T01_9000003744_25675cztM0_level2.evt modeM0/AS1A09_043T01_9000003744_25675cztM0_level2_quad_clean.evt
Size (bytes)479,275,20094,763,520
Size457.1 MB 90.4 MB
Events in quadrant A3,339,933627,806
Events in quadrant B3,355,233630,621
Events in quadrant C3,194,173586,876
Events in quadrant D4,184,544571,467

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140000
B0141020
C0136620
D0169010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6495340.523480%
B6495550.846805%
C6495640.985373%
D64951512.324865%

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 7620 6495 0 0 0.00% 0.00%
B 7620 6496 7 7 0.09% 0.11%
C 7620 6496 0 0 0.00% 0.00%
D 7620 6495 97 97 1.27% 1.49%

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 8 192 120630 711.48 834 820 168.4
A 13 254 9884 53.83 834 820 168.4
A 3 137 7612 40.33 834 820 168.4
B 3 112 81936 520.39 825 808 155.9
B 12 111 18662 114.52 825 808 155.9
B 0 190 18501 113.49 825 808 155.9
C 14 238 125908 686.16 782 789 182.3
C 3 233 13872 71.75 782 789 182.3
C 13 61 5531 26.01 782 789 182.3
D 8 195 602508 3118.42 790 769 193.0
D 5 233 217216 1121.7 790 769 193.0
D 2 244 116748 601.04 790 769 193.0

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