ASTROSAT CZTI

Data Quality Report

Orbit 22598

Creation date: 2024-06-27T18:43:23.129420
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/AS1C05_006T01_9000003356_22598cztM0_level2.evt modeM0/AS1C05_006T01_9000003356_22598cztM0_level2_quad_clean.evt
Size (bytes)337,979,52063,322,560
Size322.3 MB 60.4 MB
Events in quadrant A2,365,829401,288
Events in quadrant B2,515,234405,233
Events in quadrant C2,375,477387,151
Events in quadrant D2,645,094379,675

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101051
B0105471
C0101001
D0112041

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4901460.938584%
B4901831.693532%
C4901671.367068%
D4901450.918180%

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 5486 4902 0 0 0.00% 0.00%
B 5486 4902 3 3 0.05% 0.06%
C 5486 4902 0 0 0.00% 0.00%
D 5486 4902 8 8 0.15% 0.16%

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 14 235 19590 152.62 607 592 124.5
A 13 254 8896 66.71 607 592 124.5
A 0 226 5377 38.44 607 592 124.5
B 0 229 51884 438.53 604 588 117.0
B 0 190 36953 310.88 604 588 117.0
B 5 172 24800 206.99 604 588 117.0
C 14 238 91587 662.64 580 584 137.3
C 10 222 15181 106.29 580 584 137.3
C 13 61 4031 25.1 580 584 137.3
D 1 239 202239 1380.76 592 574 146.1
D 1 52 119762 816.05 592 574 146.1
D 7 38 32025 215.34 592 574 146.1

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