ASTROSAT CZTI

Data Quality Report

Orbit 25959

Creation date: 2024-06-27T19:23:16.822125
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/AS1A07_068T01_9000003760_25959cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25959cztM0_level2_quad_clean.evt
Size (bytes)482,284,80087,517,440
Size459.9 MB 83.5 MB
Events in quadrant A3,244,983559,300
Events in quadrant B3,389,511554,039
Events in quadrant C3,212,191530,662
Events in quadrant D4,286,163521,308

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142780
B0146740
C0142140
D0175810

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B091
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6959510.732864%
B69381161.671952%
C6959741.063371%
D69282984.301386%

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 7817 7019 0 0 0.00% 0.00%
B 7817 7009 1 1 0.01% 0.01%
C 7817 7020 1 1 0.01% 0.01%
D 7816 6998 247 247 3.16% 3.53%

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 3 1 12500 69.08 836 819 169.1
A 13 254 10636 58.06 836 819 169.1
A 3 137 7880 41.76 836 819 169.1
B 0 245 123965 773.17 822 800 159.3
B 0 190 26936 164.07 822 800 159.3
B 12 111 19688 118.57 822 800 159.3
C 14 238 124617 666.86 787 790 185.7
C 3 233 18171 93.6 787 790 185.7
C 13 61 5373 24.68 787 790 185.7
D 1 52 972832 5168.1 785 765 188.1
D 7 80 299543 1588.49 785 765 188.1
D 2 234 26555 137.12 785 765 188.1

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