ASTROSAT CZTI

Data Quality Report

Orbit 33496

Creation date: 2024-06-27T20:49:28.581977
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/AS1A11_060T01_9000004804_33496cztM0_level2.evt modeM0/AS1A11_060T01_9000004804_33496cztM0_level2_quad_clean.evt
Size (bytes)429,739,20059,716,800
Size409.8 MB 57.0 MB
Events in quadrant A2,455,575371,304
Events in quadrant B2,948,648379,757
Events in quadrant C3,181,552367,211
Events in quadrant D4,093,470343,014

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100053
B0115162
C0125752
D0152602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A493880.162009%
B49381132.288376%
C4938881.782098%
D49381573.179425%

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 7060 4939 0 0 0.00% 0.00%
B 7060 4939 87 87 1.23% 1.76%
C 7060 4939 84 84 1.19% 1.70%
D 7060 4939 167 167 2.37% 3.38%

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 13 254 7271 52.56 634 623 126.5
A 13 6 6905 49.66 634 623 126.5
A 3 137 5788 40.83 634 623 126.5
B 5 172 383938 3195.3 635 621 120.0
B 5 255 54155 446.25 635 621 120.0
B 12 111 14236 113.49 635 621 120.0
C 0 10 213756 1469.89 630 638 145.0
C 15 214 212917 1464.1 630 638 145.0
C 1 23 162373 1115.5 630 638 145.0
D 8 195 985894 6596.25 619 605 149.4
D 2 250 338377 2261.3 619 605 149.4
D 13 249 253866 1695.52 619 605 149.4

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