ASTROSAT CZTI

Data Quality Report

Orbit 04274

Creation date: 2024-06-27T14:39:41.620710
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/AS1G05_240T01_9000000536_04274cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04274cztM0_level2_quad_clean.evt
Size (bytes)613,676,16067,777,920
Size585.2 MB 64.6 MB
Events in quadrant A3,619,179399,964
Events in quadrant B5,280,468394,262
Events in quadrant C3,176,531387,495
Events in quadrant D6,018,681365,985

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01504
B01502
C01491
D01502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015868330
B021405762
C015133327
D023544672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72531381.902661%
B72332813.884972%
C7246811.117858%
D72333124.313563%

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 7411 7264 26 26 0.35% 0.36%
B 7410 7253 26 26 0.35% 0.36%
C 7422 7266 0 0 0.00% 0.00%
D 7418 7256 197 197 2.66% 2.71%

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 8 15 224793 1279.07 841 820 175.1
A 0 50 125017 709.27 841 820 175.1
A 0 199 20017 109.63 841 820 175.1
B 3 0 1684376 10270.75 837 816 163.9
B 10 16 164389 997.9 837 816 163.9
B 14 167 56873 341.98 837 816 163.9
C 13 61 6796 31.36 811 814 190.7
C 10 65 6100 27.71 811 814 190.7
C 7 247 3263 12.84 811 814 190.7
D 11 132 1972237 10069.69 796 769 195.8
D 2 232 327777 1670.26 796 769 195.8
D 1 52 223363 1136.95 796 769 195.8

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