ASTROSAT CZTI

Data Quality Report

Orbit 46736

Creation date: 2024-06-27T23:27:01.203092
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/AS1T05_205T01_9000006260_46736cztM0_level2.fits modeM0/AS1T05_205T01_9000006260_46736cztM0_level2_quad_clean.evt
Size (bytes)516,654,720106,214,400
Size492.7 MB 101.3 MB
Events in quadrant A6,404,851690,766
Events in quadrant B5,027,921716,472
Events in quadrant C3,212,516720,887
Events in quadrant D3,981,079639,631

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230301
B0193174
C0141931
D0164191

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64294156.455125%
B64285518.571873%
C6428550.855632%
D64282433.780336%

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 7634 6430 234 234 3.07% 3.64%
B 7633 6429 417 417 5.46% 6.49%
C 7633 6429 41 41 0.54% 0.64%
D 7633 6429 190 190 2.49% 2.96%

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 10 83 3243111 22087.68 705 690 146.8
A 9 191 226253 1536.56 705 690 146.8
A 13 248 176769 1199.47 705 690 146.8
B 12 16 2034917 14896.75 701 679 136.6
B 3 112 122840 894.59 701 679 136.6
B 0 190 28056 200.48 701 679 136.6
C 12 2 176772 1049.64 710 714 167.7
C 3 233 140902 835.79 710 714 167.7
C 14 254 122401 725.49 710 714 167.7
D 13 249 567199 3260.04 693 672 173.8
D 1 52 480157 2759.16 693 672 173.8
D 12 238 98456 562.69 693 672 173.8

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