ASTROSAT CZTI

Data Quality Report

Orbit 24156

Creation date: 2024-06-27T19:02:52.290554
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/AS1A07_047T06_9000003576_24156cztM0_level2.evt modeM0/AS1A07_047T06_9000003576_24156cztM0_level2_quad_clean.evt
Size (bytes)523,992,960139,285,440
Size499.7 MB 132.8 MB
Events in quadrant A3,275,357975,057
Events in quadrant B3,987,188962,361
Events in quadrant C3,563,955939,168
Events in quadrant D4,616,134903,147

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136682
B0158842
C0146242
D0179022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6286260.413618%
B62863295.233853%
C62861462.322622%
D62863114.947502%

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 7536 6287 0 0 0.00% 0.00%
B 7536 6286 254 254 3.37% 4.04%
C 7536 6287 35 35 0.46% 0.56%
D 7536 6287 264 264 3.50% 4.20%

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 6 16 34664 206.64 839 823 163.8
A 13 254 10634 59.91 839 823 163.8
A 0 226 7163 38.71 839 823 163.8
B 0 245 677493 4577.49 812 795 147.8
B 0 189 88289 591.85 812 795 147.8
B 5 172 37995 251.63 812 795 147.8
C 14 238 134133 728.85 811 819 182.9
C 2 16 131712 715.61 811 819 182.9
C 3 233 61959 334.26 811 819 182.9
D 7 238 1220091 6267.22 810 786 194.6
D 6 112 170443 872.04 810 786 194.6
D 8 195 89279 454.85 810 786 194.6

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