ASTROSAT CZTI

Data Quality Report

Orbit 15023

Creation date: 2024-06-27T17:02:40.196731
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/AS1T02_057T01_9000002212_15023cztM0_level2.evt modeM0/AS1T02_057T01_9000002212_15023cztM0_level2_quad_clean.evt
Size (bytes)540,743,040106,200,000
Size515.7 MB 101.3 MB
Events in quadrant A3,530,588703,404
Events in quadrant B3,857,489720,167
Events in quadrant C3,268,739699,427
Events in quadrant D5,279,634640,340

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146843
B0155702
C0138022
D0200882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6499380.584705%
B64991742.677335%
C6499400.615479%
D64994076.262502%

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 7800 6502 3 3 0.04% 0.05%
B 7800 6502 118 118 1.51% 1.81%
C 7800 6502 11 11 0.14% 0.17%
D 7800 6502 434 434 5.56% 6.67%

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 1 162 180412 1137.82 795 781 157.9
A 1 178 94965 596.58 795 781 157.9
A 1 161 82212 515.8 795 781 157.9
B 3 64 703520 4762.84 798 779 147.5
B 0 229 23431 153.52 798 779 147.5
B 12 111 16712 107.99 798 779 147.5
C 3 233 159618 902.08 769 773 176.1
C 9 236 80802 454.48 769 773 176.1
C 0 207 27728 153.08 769 773 176.1
D 7 223 1107688 6207.62 747 725 178.3
D 2 136 1088651 6100.86 747 725 178.3
D 10 70 180753 1009.56 747 725 178.3

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