ASTROSAT CZTI

Data Quality Report

Orbit 08785

Creation date: 2024-06-27T15:37:10.748911
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/AS1G07_010T02_9000001222_08785cztM0_level2.evt modeM0/AS1G07_010T02_9000001222_08785cztM0_level2_quad_clean.evt
Size (bytes)447,315,840106,911,360
Size426.6 MB 102.0 MB
Events in quadrant A3,414,497712,761
Events in quadrant B3,025,567720,703
Events in quadrant C3,007,925706,342
Events in quadrant D3,691,548679,023

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139372
B0127161
C0126811
D0149341

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6000951.583333%
B6000671.116667%
C6000621.033333%
D60001262.100000%

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 7325 6000 15 15 0.20% 0.25%
B 7325 6000 0 0 0.00% 0.00%
C 7325 6000 4 4 0.05% 0.07%
D 7325 6000 58 58 0.79% 0.97%

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 8 5 155458 988.37 781 768 156.5
A 13 251 109650 695.69 781 768 156.5
A 15 223 93460 592.24 781 768 156.5
B 12 111 15401 100.94 775 758 145.1
B 11 111 12871 83.5 775 758 145.1
B 4 173 12711 82.4 775 758 145.1
C 1 16 18458 101.46 761 765 174.4
C 9 68 16962 92.88 761 765 174.4
C 13 61 5618 27.83 761 765 174.4
D 2 152 319464 1698.77 758 740 187.6
D 9 64 154398 818.98 758 740 187.6
D 13 169 120803 639.92 758 740 187.6

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