ASTROSAT CZTI

Data Quality Report

Orbit 27619

Creation date: 2024-06-27T19:42:14.773670
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/AS1T03_257T01_9000003976_27619cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27619cztM0_level2_quad_clean.evt
Size (bytes)473,155,20080,832,960
Size451.2 MB 77.1 MB
Events in quadrant A3,277,498510,249
Events in quadrant B3,719,771529,463
Events in quadrant C3,323,938492,815
Events in quadrant D3,574,931469,772

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134680
B0149060
C0135830
D0146700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6384240.375940%
B6384741.159148%
C6384630.986842%
D6383981.535328%

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 7764 6385 3 3 0.04% 0.05%
B 7764 6385 22 22 0.28% 0.34%
C 7764 6385 0 0 0.00% 0.00%
D 7763 6384 67 67 0.86% 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 4 2 15527 87.15 843 829 168.7
A 8 192 12597 69.78 843 829 168.7
A 13 254 10781 59.01 843 829 168.7
B 3 64 185140 1162.92 850 832 158.5
B 10 245 165475 1038.84 850 832 158.5
B 0 230 19864 120.09 850 832 158.5
C 14 238 132842 704.83 811 819 187.3
C 8 128 11905 59.18 811 819 187.3
C 1 16 6349 29.52 811 819 187.3
D 7 80 349368 1813.1 801 779 192.3
D 2 250 89441 461.15 801 779 192.3
D 1 52 37838 192.75 801 779 192.3

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