ASTROSAT CZTI

Data Quality Report

Orbit 25253

Creation date: 2024-06-27T19:15:33.656116
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/AS1A09_027T01_9000003694_25253cztM0_level2.evt modeM0/AS1A09_027T01_9000003694_25253cztM0_level2_quad_clean.evt
Size (bytes)870,603,84084,536,640
Size830.3 MB 80.6 MB
Events in quadrant A3,161,332663,416
Events in quadrant B3,364,525669,843
Events in quadrant C3,405,907637,663
Events in quadrant D15,984,026122,667

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135790
B0141080
C0141050
D0521210

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6658490.735957%
B6659671.006157%
C6659671.006157%
D6658604790.823070%

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 7588 6659 0 0 0.00% 0.00%
B 7589 6660 5 5 0.07% 0.08%
C 7589 6660 3 3 0.04% 0.05%
D 7587 6657 5277 5277 69.55% 79.27%

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 11 29 11849 66.98 815 800 165.0
A 13 254 10868 61.03 815 800 165.0
A 3 137 7328 39.57 815 800 165.0
B 15 33 87966 563.08 807 783 154.8
B 0 190 71127 454.32 807 783 154.8
B 0 229 34920 220.48 807 783 154.8
C 14 238 125198 690.75 771 777 180.1
C 3 233 123664 682.23 771 777 180.1
C 7 247 71638 393.4 771 777 180.1
D 1 239 14674502 224520.05 265 256 65.4
D 8 195 139131 2124.83 265 256 65.4
D 1 52 51596 785.52 265 256 65.4

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