ASTROSAT CZTI

Data Quality Report

Orbit 12624

Creation date: 2024-06-27T16:30:09.112096
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/AS1G08_071T01_9000001874_12624cztM0_level2.evt modeM0/AS1G08_071T01_9000001874_12624cztM0_level2_quad_clean.evt
Size (bytes)524,612,16090,469,440
Size500.3 MB 86.3 MB
Events in quadrant A3,230,873566,741
Events in quadrant B3,581,768576,667
Events in quadrant C3,269,797580,713
Events in quadrant D5,333,384530,805

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01488
B01486
C01482
D01486

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014967505
B015938577
C015177467
D021764975

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201
B0200
C0201
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6967430.617195%
B69531341.927226%
C6990360.515021%
D69082603.763752%

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 9226 7138 5 5 0.05% 0.07%
B 9226 7129 33 33 0.36% 0.46%
C 9226 7147 4 4 0.04% 0.06%
D 9226 7120 180 180 1.95% 2.53%

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 12 189 72698 431.14 816 798 166.8
A 13 248 9488 52.11 816 798 166.8
A 8 192 9119 49.9 816 798 166.8
B 4 239 230523 1461.46 822 802 157.2
B 11 51 52070 326.16 822 802 157.2
B 0 214 35402 220.12 822 802 157.2
C 15 208 111110 590.85 807 811 186.7
C 14 234 10133 49.94 807 811 186.7
C 13 61 5888 27.2 807 811 186.7
D 10 157 1236359 6659.4 773 751 185.5
D 1 52 973990 5245.34 773 751 185.5
D 13 104 97964 523.94 773 751 185.5

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