ASTROSAT CZTI

Data Quality Report

Orbit 37071

Creation date: 2024-06-27T21:35:11.419887
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_138T04_9000005282_37071cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37071cztM0_level2_quad_clean.evt
Size (bytes)485,504,64054,455,040
Size463.0 MB 51.9 MB
Events in quadrant A3,010,215333,285
Events in quadrant B4,056,654330,601
Events in quadrant C3,268,922314,816
Events in quadrant D4,010,909301,019

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120103
B0153492
C0127712
D0154022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5269180.341621%
B52694057.686468%
C5269821.556273%
D52691913.624976%

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 7301 5270 5 5 0.07% 0.09%
B 7301 5270 306 306 4.19% 5.81%
C 7301 5270 73 73 1.00% 1.39%
D 7301 5270 209 209 2.86% 3.97%

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 267637 1903.05 701 689 140.3
A 9 143 21171 146.01 701 689 140.3
A 13 254 8211 53.62 701 689 140.3
B 5 172 727631 5810.33 668 654 125.1
B 5 184 447042 3567.74 668 654 125.1
B 5 200 91739 727.99 668 654 125.1
C 0 10 448814 2973.89 657 665 150.7
C 15 214 223282 1477.27 657 665 150.7
C 14 254 19847 127.29 657 665 150.7
D 12 17 238504 1463.85 668 652 162.5
D 1 20 225355 1382.92 668 652 162.5
D 1 47 210593 1292.07 668 652 162.5

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