ASTROSAT CZTI

Data Quality Report

Orbit 18742

Creation date: 2024-06-27T17:54:08.637989
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/AS1A05_072T04_9000002802_18742cztM0_level2.evt modeM0/AS1A05_072T04_9000002802_18742cztM0_level2_quad_clean.evt
Size (bytes)441,864,00092,799,360
Size421.4 MB 88.5 MB
Events in quadrant A3,421,037598,446
Events in quadrant B3,332,570606,486
Events in quadrant C3,121,208583,343
Events in quadrant D3,073,493576,861

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139351
B0136871
C0130771
D0131931

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6379300.470293%
B6379490.768145%
C6379330.517322%
D6380360.564263%

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 7554 6380 1 1 0.01% 0.02%
B 7554 6380 10 10 0.13% 0.16%
C 7554 6380 0 0 0.00% 0.00%
D 7555 6381 11 11 0.15% 0.17%

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 15 192 250692 1521.8 813 799 164.2
A 14 111 19253 112.38 813 799 164.2
A 13 254 10578 59.55 813 799 164.2
B 7 220 77953 505.86 802 782 152.6
B 0 197 34512 221.1 802 782 152.6
B 10 245 27172 172.99 802 782 152.6
C 14 238 121981 680.7 767 771 178.1
C 3 233 7528 37.94 767 771 178.1
C 13 61 5312 25.5 767 771 178.1
D 13 168 41796 214.6 785 763 191.2
D 7 96 41643 213.8 785 763 191.2
D 2 234 24894 126.21 785 763 191.2

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