ASTROSAT CZTI

Data Quality Report

Orbit 18696

Creation date: 2024-06-27T17:53:32.042024
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/AS1A05_072T04_9000002794_18696cztM0_level2.evt modeM0/AS1A05_072T04_9000002794_18696cztM0_level2_quad_clean.evt
Size (bytes)467,683,20096,094,080
Size446.0 MB 91.6 MB
Events in quadrant A3,178,155614,954
Events in quadrant B3,241,306628,311
Events in quadrant C3,334,730606,267
Events in quadrant D3,952,363591,391

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137112
B0138142
C0140942
D0162712

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6726350.520369%
B6727410.609484%
C6727640.951390%
D6727821.218968%

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 7701 6727 0 0 0.00% 0.00%
B 7702 6728 3 3 0.04% 0.04%
C 7702 6728 17 17 0.22% 0.25%
D 7702 6728 37 37 0.48% 0.55%

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 21165 123.32 813 795 165.2
A 13 254 10496 58.73 813 795 165.2
A 11 29 9987 55.65 813 795 165.2
B 0 197 24357 152.5 808 789 154.5
B 0 189 19441 120.69 808 789 154.5
B 12 111 18817 116.65 808 789 154.5
C 0 207 131135 722.78 773 779 180.4
C 14 238 120267 662.52 773 779 180.4
C 9 221 25381 136.41 773 779 180.4
D 1 52 532704 2753.64 785 760 193.2
D 7 238 378588 1955.85 785 760 193.2
D 12 110 62609 320.16 785 760 193.2

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