ASTROSAT CZTI

Data Quality Report

Orbit 15342

Creation date: 2024-06-27T17:07:09.075998
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_073T01_9000002260_15342cztM0_level2.evt modeM0/AS1T02_073T01_9000002260_15342cztM0_level2_quad_clean.evt
Size (bytes)456,410,880109,765,440
Size435.3 MB 104.7 MB
Events in quadrant A3,281,322725,829
Events in quadrant B3,332,197739,557
Events in quadrant C3,415,600729,175
Events in quadrant D3,367,787692,643

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138263
B0139582
C0141152
D0140792

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6270841.339713%
B6270871.387560%
C6270751.196172%
D6270781.244019%

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 6271 0 0 0.00% 0.00%
B 7561 6272 1 1 0.01% 0.02%
C 7561 6271 0 0 0.00% 0.00%
D 7561 6271 5 5 0.07% 0.08%

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 0 226 7532 39.51 851 836 169.5
A 4 2 7525 39.47 851 836 169.5
A 12 194 6373 32.67 851 836 169.5
B 3 64 22096 134.42 844 825 158.2
B 12 111 18368 110.86 844 825 158.2
B 0 205 16852 101.28 844 825 158.2
C 3 233 132855 692.54 838 845 190.6
C 7 247 14436 71.3 838 845 190.6
C 13 61 5984 26.96 838 845 190.6
D 1 255 107162 526.12 837 814 202.1
D 10 70 40186 194.78 837 814 202.1
D 2 234 22910 109.31 837 814 202.1

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