ASTROSAT CZTI

Data Quality Report

Orbit 12044

Creation date: 2024-06-27T16:21:39.776336
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/AS1A03_085T02_9000001784_12044cztM0_level2.evt modeM0/AS1A03_085T02_9000001784_12044cztM0_level2_quad_clean.evt
Size (bytes)533,764,80086,912,640
Size509.0 MB 82.9 MB
Events in quadrant A3,334,056561,282
Events in quadrant B5,002,951547,571
Events in quadrant C3,015,915549,718
Events in quadrant D4,371,560519,868

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141944
B0194953
C0134833
D0171243

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6499811.246346%
B64994797.370365%
C6499310.476996%
D64992193.369749%

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 7570 6501 8 8 0.11% 0.12%
B 7570 6500 289 289 3.82% 4.45%
C 7570 6502 1 1 0.01% 0.02%
D 7570 6502 159 159 2.10% 2.45%

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 1 162 91168 555.45 797 782 162.7
A 1 178 41099 247.76 797 782 162.7
A 1 161 38370 230.99 797 782 162.7
B 4 239 1269700 8368.26 786 768 151.6
B 4 206 267035 1755.96 786 768 151.6
B 0 231 251399 1652.84 786 768 151.6
C 14 234 16039 85.07 769 773 179.5
C 13 61 5534 26.53 769 773 179.5
C 14 225 1896 6.26 769 773 179.5
D 1 52 1107101 6033.63 757 737 183.4
D 8 195 272957 1484.57 757 737 183.4
D 13 104 54987 295.86 757 737 183.4

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