ASTROSAT CZTI

Data Quality Report

Orbit 25810

Creation date: 2024-06-27T19:21:41.508990
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_9000003756_25810cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25810cztM0_level2_quad_clean.evt
Size (bytes)446,129,28092,710,080
Size425.5 MB 88.4 MB
Events in quadrant A3,248,622610,760
Events in quadrant B3,172,948621,285
Events in quadrant C3,088,963577,341
Events in quadrant D3,581,374567,462

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134610
B0131940
C0130140
D0147270

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6169470.761874%
B6169550.891555%
C6169801.296807%
D6169751.215756%

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 7429 6169 0 0 0.00% 0.00%
B 7429 6169 0 0 0.00% 0.00%
C 7429 6170 0 0 0.00% 0.00%
D 7429 6170 57 57 0.77% 0.92%

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 162079 1005.9 801 787 160.3
A 13 254 8569 48.53 801 787 160.3
A 3 137 7333 40.82 801 787 160.3
B 10 247 26353 168.99 796 780 151.3
B 12 111 17763 112.22 796 780 151.3
B 11 111 15906 99.95 796 780 151.3
C 14 238 123404 696.79 756 762 176.0
C 3 233 11380 60.33 756 762 176.0
C 0 10 8424 43.53 756 762 176.0
D 1 52 452279 2496.37 757 739 180.9
D 7 223 115096 632.23 757 739 180.9
D 8 195 90103 494.06 757 739 180.9

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