ASTROSAT CZTI

Data Quality Report

Orbit 26925

Creation date: 2024-06-27T19:34:34.245359
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_134T01_9000003896_26925cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26925cztM0_level2_quad_clean.evt
Size (bytes)926,360,64070,263,360
Size883.4 MB 67.0 MB
Events in quadrant A10,125,903376,014
Events in quadrant B9,648,815382,379
Events in quadrant C3,118,152499,798
Events in quadrant D4,765,631456,200

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340690
B0325110
C0124990
D0177550

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5888325755.315897%
B5888320854.483696%
C58891212.054678%
D58895369.101715%

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 7078 5888 2733 2733 38.61% 46.42%
B 7078 5888 2754 2754 38.91% 46.77%
C 7079 5889 1 1 0.01% 0.02%
D 7079 5889 418 418 5.90% 7.10%

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 14 235 7891226 71101.1 560 549 111.0
A 5 168 29332 259.36 560 549 111.0
A 6 16 24245 213.52 560 549 111.0
B 0 189 6734634 53684.73 670 655 125.4
B 3 64 191223 1519.25 670 655 125.4
B 10 245 57192 450.73 670 655 125.4
C 14 238 122176 689.7 763 769 176.0
C 15 208 17009 92.26 763 769 176.0
C 2 16 9574 50.02 763 769 176.0
D 7 80 1041381 5927.75 741 725 175.6
D 2 250 843599 4801.15 741 725 175.6
D 11 176 39553 221.17 741 725 175.6

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