ASTROSAT CZTI

Data Quality Report

Orbit 23352

Creation date: 2024-06-27T18:53:09.511778
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/AS1A07_135T02_9000003450_23352cztM0_level2.evt modeM0/AS1A07_135T02_9000003450_23352cztM0_level2_quad_clean.evt
Size (bytes)744,658,56077,209,920
Size710.2 MB 73.6 MB
Events in quadrant A3,482,029467,319
Events in quadrant B3,569,687473,919
Events in quadrant C7,573,525443,372
Events in quadrant D7,434,212445,669

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149571
B0151331
C0272841
D0271501

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7288390.535126%
B7287771.056676%
C7288148520.375960%
D728890412.403952%

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 7598 7289 0 0 0.00% 0.00%
B 7597 7288 5 5 0.07% 0.07%
C 7598 7288 1013 1013 13.33% 13.90%
D 7598 7289 627 627 8.25% 8.60%

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 13 254 11236 56.34 901 880 183.8
A 3 137 8025 38.87 901 880 183.8
A 0 226 7816 37.73 901 880 183.8
B 12 111 21025 116.49 895 874 173.0
B 0 190 20774 115.03 895 874 173.0
B 11 111 18715 103.13 895 874 173.0
C 0 239 4110754 21313.67 816 820 192.8
C 14 238 126760 653.11 816 820 192.8
C 0 207 91194 468.67 816 820 192.8
D 1 52 3516278 16786.15 846 820 209.4
D 13 249 245714 1169.36 846 820 209.4
D 9 85 178393 847.9 846 820 209.4

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