ASTROSAT CZTI

Data Quality Report

Orbit 14218

Creation date: 2024-06-27T16:52:04.528455
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/AS1G08_084T01_9000002100_14218cztM0_level2.evt modeM0/AS1G08_084T01_9000002100_14218cztM0_level2_quad_clean.evt
Size (bytes)481,524,480111,300,480
Size459.2 MB 106.1 MB
Events in quadrant A3,426,400735,822
Events in quadrant B3,533,556739,516
Events in quadrant C3,385,216715,044
Events in quadrant D3,761,777692,195

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146922
B0150031
C0144461
D0156431

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7005570.813704%
B7005941.341899%
C7005270.385439%
D7005540.770878%

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 7256 7007 1 1 0.01% 0.01%
B 7256 7007 3 3 0.04% 0.04%
C 7256 7007 0 0 0.00% 0.00%
D 7256 7007 22 22 0.30% 0.31%

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 15 109006 643.41 826 805 168.2
A 12 189 107786 636.16 826 805 168.2
A 9 143 17363 98.46 826 805 168.2
B 0 219 83347 528.56 826 807 156.2
B 4 97 64181 405.83 826 807 156.2
B 0 229 47258 297.46 826 807 156.2
C 3 233 276529 1503.09 795 799 183.4
C 0 207 6435 30.72 795 799 183.4
C 13 61 5734 26.9 795 799 183.4
D 8 195 328639 1568.4 787 770 209.0
D 5 222 169536 807.31 787 770 209.0
D 13 122 91421 433.64 787 770 209.0

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