ASTROSAT CZTI

Data Quality Report

Orbit 13919

Creation date: 2024-06-27T16:47:54.739123
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_219T01_9000002054_13919cztM0_level2.evt modeM0/AS1A04_219T01_9000002054_13919cztM0_level2_quad_clean.evt
Size (bytes)471,490,56083,998,080
Size449.6 MB 80.1 MB
Events in quadrant A2,724,650549,695
Events in quadrant B2,797,623555,623
Events in quadrant C2,727,580547,444
Events in quadrant D5,639,766489,626

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119252
B0119591
C0117911
D0206161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5733520.907029%
B5733510.889587%
C5733330.575615%
D57335609.768010%

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 6709 5734 3 3 0.04% 0.05%
B 6709 5734 3 3 0.04% 0.05%
C 6709 5734 0 0 0.00% 0.00%
D 6709 5734 454 454 6.77% 7.92%

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 9 143 24458 168.23 695 679 141.3
A 1 162 8999 58.86 695 679 141.3
A 15 69 8988 58.78 695 679 141.3
B 10 244 35415 260.21 687 670 133.5
B 4 173 25637 186.98 687 670 133.5
B 12 111 15958 114.5 687 670 133.5
C 3 233 91514 573.04 676 679 158.5
C 13 61 4804 26.02 676 679 158.5
C 3 202 1620 5.94 676 679 158.5
D 1 52 2708752 17642.28 644 627 153.5
D 13 122 347217 2257.89 644 627 153.5
D 13 189 65510 422.69 644 627 153.5

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