ASTROSAT CZTI

Data Quality Report

Orbit 28815

Creation date: 2024-06-27T19:56:43.888382
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/AS1A10_121T01_9000004134_28815cztM0_level2.evt modeM0/AS1A10_121T01_9000004134_28815cztM0_level2_quad_clean.evt
Size (bytes)731,427,840110,903,040
Size697.5 MB 105.8 MB
Events in quadrant A3,857,130764,015
Events in quadrant B3,270,823802,065
Events in quadrant C3,983,320745,162
Events in quadrant D10,601,308593,910

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156104
B0138792
C0163742
D0359822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64912213.404714%
B6491530.816515%
C64912163.327684%
D6491289444.584810%

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 7561 6491 212 212 2.80% 3.27%
B 7561 6491 4 4 0.05% 0.06%
C 7561 6491 1 1 0.01% 0.02%
D 7561 6491 2618 2618 34.63% 40.33%

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 540116 3409.01 787 769 158.2
A 14 235 132729 834.07 787 769 158.2
A 15 174 106571 668.73 787 769 158.2
B 5 172 74509 492.05 797 780 149.8
B 0 244 23110 149.02 797 780 149.8
B 12 111 17727 113.1 797 780 149.8
C 3 233 799426 4488.95 756 759 177.9
C 14 238 168259 941.44 756 759 177.9
C 14 254 67644 375.93 756 759 177.9
D 8 195 5427908 34887.08 642 626 155.6
D 13 104 1168791 7509.07 642 626 155.6
D 1 52 1082393 6953.7 642 626 155.6

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