ASTROSAT CZTI

Data Quality Report

Orbit 17207

Creation date: 2024-06-27T17:33:34.225495
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_185T04_9000002548_17207cztM0_level2.evt modeM0/AS1A05_185T04_9000002548_17207cztM0_level2_quad_clean.evt
Size (bytes)478,347,840101,364,480
Size456.2 MB 96.7 MB
Events in quadrant A3,106,940681,326
Events in quadrant B3,280,565675,021
Events in quadrant C3,591,612634,208
Events in quadrant D4,071,672631,172

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134421
B0139501
C0147491
D0163561

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6424480.747198%
B6425520.809339%
C6425681.058366%
D64251993.097276%

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 7520 6425 0 0 0.00% 0.00%
B 7521 6426 7 7 0.09% 0.11%
C 7521 6426 0 0 0.00% 0.00%
D 7521 6425 138 138 1.83% 2.15%

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 12 189 49477 304.11 795 778 160.1
A 0 226 7236 40.33 795 778 160.1
A 12 194 5955 32.33 795 778 160.1
B 0 189 105585 704.25 786 767 148.8
B 0 197 27902 182.31 786 767 148.8
B 7 220 24726 160.97 786 767 148.8
C 3 233 541201 3073.4 752 756 175.8
C 14 238 115356 651.71 752 756 175.8
C 13 61 5357 26.16 752 756 175.8
D 5 222 602709 3239.52 768 747 185.8
D 11 176 304600 1635.22 768 747 185.8
D 13 189 152961 819.16 768 747 185.8

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