ASTROSAT CZTI

Data Quality Report

Orbit 31642

Creation date: 2024-06-27T20:31:04.308857
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/AS1T04_035T01_9000004622_31642cztM0_level2.evt modeM0/AS1T04_035T01_9000004622_31642cztM0_level2_quad_clean.evt
Size (bytes)727,044,48095,319,360
Size693.4 MB 90.9 MB
Events in quadrant A6,720,516613,456
Events in quadrant B6,116,199631,566
Events in quadrant C4,450,575603,656
Events in quadrant D4,313,901605,339

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0243372
B0225922
C0171452
D0170572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6194118619.147562%
B61945508.879561%
C619468010.978366%
D61941011.630610%

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 7524 6195 951 951 12.64% 15.35%
B 7524 6195 380 380 5.05% 6.13%
C 7524 6195 203 203 2.70% 3.28%
D 7524 6195 79 79 1.05% 1.28%

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 13 3770929 25189.63 753 742 149.7
A 15 174 24744 160.36 753 742 149.7
A 14 238 13322 84.05 753 742 149.7
B 6 159 1812278 12340.08 788 770 146.8
B 5 172 852743 5803.68 788 770 146.8
B 10 245 222843 1512.77 788 770 146.8
C 0 10 1196235 6952.59 744 751 171.9
C 14 238 160142 926.97 744 751 171.9
C 3 233 64753 372.22 744 751 171.9
D 8 195 840285 4595.37 771 752 182.7
D 11 176 187185 1020.48 771 752 182.7
D 13 249 120834 657.3 771 752 182.7

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