ASTROSAT CZTI

Data Quality Report

Orbit 15881

Creation date: 2024-06-27T17:14:43.424581
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/AS1A04_143T01_9000002344_15881cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15881cztM0_level2_quad_clean.evt
Size (bytes)483,246,720100,393,920
Size460.9 MB 95.7 MB
Events in quadrant A3,649,745636,496
Events in quadrant B3,568,568657,322
Events in quadrant C3,563,317624,038
Events in quadrant D3,355,625612,386

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157203
B0153182
C0152002
D0151332

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73251071.460751%
B7325801.092150%
C7325801.092150%
D7325200.273038%

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 8056 7327 35 35 0.43% 0.48%
B 8056 7327 8 8 0.10% 0.11%
C 8056 7327 0 0 0.00% 0.00%
D 8056 7327 3 3 0.04% 0.04%

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 15 157 162142 899.75 882 863 179.2
A 15 239 78655 433.99 882 863 179.2
A 9 143 17180 91.03 882 863 179.2
B 4 173 37550 215.04 889 867 170.6
B 12 111 20288 113.85 889 867 170.6
B 4 48 18370 102.6 889 867 170.6
C 14 238 131411 648.15 858 864 201.4
C 3 233 39366 191.16 858 864 201.4
C 0 207 34210 165.56 858 864 201.4
D 1 52 35436 163.52 866 840 211.6
D 2 234 25864 118.28 866 840 211.6
D 7 223 22630 102.99 866 840 211.6

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