ASTROSAT CZTI

Data Quality Report

Orbit 24891

Creation date: 2024-06-27T19:11:06.061008
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/AS1A08_003T09_9000003644_24891cztM0_level2.evt modeM0/AS1A08_003T09_9000003644_24891cztM0_level2_quad_clean.evt
Size (bytes)475,551,36090,642,240
Size453.5 MB 86.4 MB
Events in quadrant A3,144,952583,419
Events in quadrant B3,209,410592,132
Events in quadrant C3,557,344563,210
Events in quadrant D4,039,381543,096

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136862
B0137842
C0146032
D0166233

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6644350.526791%
B6644400.602047%
C6644871.309452%
D66431582.378443%

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 7599 6645 0 0 0.00% 0.00%
B 7599 6645 0 0 0.00% 0.00%
C 7599 6645 4 4 0.05% 0.06%
D 7598 6644 132 132 1.74% 1.99%

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 13 254 10420 58.86 815 798 163.5
A 3 137 7528 41.17 815 798 163.5
A 0 226 7000 37.94 815 798 163.5
B 12 111 19315 118.35 808 785 156.6
B 0 190 18420 112.63 808 785 156.6
B 11 111 17768 108.47 808 785 156.6
C 7 247 343950 1868.53 782 790 183.7
C 14 238 123169 666.36 782 790 183.7
C 2 16 40149 214.31 782 790 183.7
D 7 238 510087 2691.47 782 759 189.2
D 1 52 389100 2052.13 782 759 189.2
D 8 195 174555 918.4 782 759 189.2

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