ASTROSAT CZTI

Data Quality Report

Orbit 25948

Creation date: 2024-06-27T19:23:09.440427
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/AS1A07_068T01_9000003760_25948cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25948cztM0_level2_quad_clean.evt
Size (bytes)472,746,24082,892,160
Size450.8 MB 79.1 MB
Events in quadrant A3,451,411520,729
Events in quadrant B3,340,253522,481
Events in quadrant C3,344,183496,629
Events in quadrant D3,716,939493,877

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144510
B0141020
C0141660
D0155150

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6838711.038315%
B6838811.184557%
C68381091.594033%
D68381341.959637%

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 7793 6839 8 8 0.10% 0.12%
B 7793 6839 1 1 0.01% 0.01%
C 7793 6839 0 0 0.00% 0.00%
D 7793 6839 72 72 0.92% 1.05%

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 13 131853 755.55 861 842 173.4
A 13 254 10222 54.1 861 842 173.4
A 3 137 7953 41.01 861 842 173.4
B 12 111 20221 119.47 851 830 162.3
B 11 111 18494 108.83 851 830 162.3
B 14 111 16802 98.41 851 830 162.3
C 14 238 132081 685.47 819 824 191.5
C 3 233 14561 71.74 819 824 191.5
C 13 61 5646 25.18 819 824 191.5
D 12 1 396136 2004.05 828 808 197.3
D 1 52 101784 511.88 828 808 197.3
D 12 233 61447 307.4 828 808 197.3

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