ASTROSAT CZTI

Data Quality Report

Orbit 22664

Creation date: 2024-06-27T18:44:10.380265
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/AS1A08_007T01_9000003362_22664cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22664cztM0_level2_quad_clean.evt
Size (bytes)723,890,880135,731,520
Size690.4 MB 129.4 MB
Events in quadrant A4,384,188890,224
Events in quadrant B4,845,921902,704
Events in quadrant C4,491,614862,509
Events in quadrant D7,555,204794,079

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01920
B01920
C01920
D01920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0195022
B0208082
C0195462
D0289712

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9544390.408634%
B95441041.089690%
C95441071.121123%
D9544100810.561609%

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 10284 9546 0 0 0.00% 0.00%
B 10284 9546 4 4 0.04% 0.04%
C 10284 9546 3 3 0.03% 0.03%
D 10284 9546 776 776 7.55% 8.13%

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 21802 91.02 1130 1107 227.4
A 13 254 17555 72.34 1130 1107 227.4
A 0 226 9618 37.43 1130 1107 227.4
B 0 219 103678 477.19 1134 1105 215.0
B 0 230 79296 363.76 1134 1105 215.0
B 0 229 78553 360.3 1134 1105 215.0
C 14 238 171371 668.23 1090 1094 254.8
C 10 23 25913 97.4 1090 1094 254.8
C 0 239 21345 79.47 1090 1094 254.8
D 1 52 2186222 8671.11 1043 1013 252.0
D 9 1 495953 1963.97 1043 1013 252.0
D 12 33 316374 1251.38 1043 1013 252.0

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