ASTROSAT CZTI

Data Quality Report

Orbit 14962

Creation date: 2024-06-27T17:01:51.935216
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/AS1T02_056T01_9000002210_14962cztM0_level2.evt modeM0/AS1T02_056T01_9000002210_14962cztM0_level2_quad_clean.evt
Size (bytes)811,042,56070,295,040
Size773.5 MB 67.0 MB
Events in quadrant A3,383,127469,269
Events in quadrant B3,695,847463,135
Events in quadrant C3,361,198458,868
Events in quadrant D13,680,800280,453

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140593
B0149602
C0141512
D0452522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6534440.673401%
B65341552.372207%
C6534370.566269%
D6534426365.243343%

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 7615 6536 2 2 0.03% 0.03%
B 7615 6536 66 66 0.87% 1.01%
C 7615 6536 0 0 0.00% 0.00%
D 7615 6536 4054 4054 53.24% 62.03%

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 113138 698.4 798 780 160.9
A 1 162 87371 538.24 798 780 160.9
A 1 178 41972 256.04 798 780 160.9
B 10 16 200473 1330.42 793 773 150.1
B 3 64 170581 1131.27 793 773 150.1
B 0 229 92677 612.27 793 773 150.1
C 7 247 218012 1217.8 774 778 178.4
C 3 233 119521 665.67 774 778 178.4
C 13 61 5533 26.66 774 778 178.4
D 7 254 11364497 84645.43 555 539 134.3
D 10 70 91770 679.54 555 539 134.3
D 13 249 55457 409.06 555 539 134.3

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