ASTROSAT CZTI

Data Quality Report

Orbit 17482

Creation date: 2024-06-27T17:37:15.108348
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/AS1T03_051T01_9000002588_17482cztM0_level2.evt modeM0/AS1T03_051T01_9000002588_17482cztM0_level2_quad_clean.evt
Size (bytes)553,109,76095,662,080
Size527.5 MB 91.2 MB
Events in quadrant A3,234,388621,537
Events in quadrant B3,385,231633,581
Events in quadrant C3,314,891612,451
Events in quadrant D6,365,906566,163

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136802
B0141702
C0138212
D0233782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6646320.481493%
B6646530.797472%
C6646771.158592%
D6646100315.091785%

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 7781 6647 0 0 0.00% 0.00%
B 7781 6647 11 11 0.14% 0.17%
C 7781 6647 0 0 0.00% 0.00%
D 7781 6646 817 817 10.50% 12.29%

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 14 237 23453 136.16 831 814 166.3
A 15 174 16170 92.36 831 814 166.3
A 0 226 7393 39.57 831 814 166.3
B 12 17 39866 249.93 829 807 156.3
B 0 197 38637 242.06 829 807 156.3
B 5 172 32777 204.57 829 807 156.3
C 14 238 125119 652.86 811 818 190.4
C 5 218 20812 105.01 811 818 190.4
C 3 233 8462 40.15 811 818 190.4
D 7 238 3030475 15850.16 785 763 191.1
D 5 222 213265 1111.72 785 763 191.1
D 13 232 56075 289.37 785 763 191.1

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