ASTROSAT CZTI

Data Quality Report

Orbit 25550

Creation date: 2024-06-27T19:18:55.918728
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/AS1A09_008T05_9000003724_25550cztM0_level2.evt modeM0/AS1A09_008T05_9000003724_25550cztM0_level2_quad_clean.evt
Size (bytes)475,485,12071,985,600
Size453.5 MB 68.7 MB
Events in quadrant A3,397,787444,170
Events in quadrant B3,408,804447,741
Events in quadrant C3,385,682417,636
Events in quadrant D3,761,224411,503

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137460
B0138060
C0138300
D0150670

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6574831.262549%
B65731151.749582%
C65731342.038643%
D6573881.338810%

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 7629 6575 0 0 0.00% 0.00%
B 7628 6574 0 0 0.00% 0.00%
C 7628 6574 0 0 0.00% 0.00%
D 7628 6574 16 16 0.21% 0.24%

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 9506 49.1 880 865 176.0
A 3 137 8018 40.65 880 865 176.0
A 0 226 7525 37.84 880 865 176.0
B 12 111 20504 118.16 871 850 166.3
B 11 111 18461 105.88 871 850 166.3
B 14 111 17599 100.69 871 850 166.3
C 14 238 133933 685.64 829 836 194.1
C 2 16 17635 86.54 829 836 194.1
C 13 61 5776 25.45 829 836 194.1
D 1 52 430207 2093.73 840 818 205.1
D 8 195 119050 576.51 840 818 205.1
D 2 234 23826 112.19 840 818 205.1

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