ASTROSAT CZTI

Data Quality Report

Orbit 11656

Creation date: 2024-06-27T16:16:33.283653
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/AS1A04_037T02_9000001718_11656cztM0_level2.evt modeM0/AS1A04_037T02_9000001718_11656cztM0_level2_quad_clean.evt
Size (bytes)782,213,76093,847,680
Size746.0 MB 89.5 MB
Events in quadrant A5,954,296574,953
Events in quadrant B4,077,803601,457
Events in quadrant C3,674,478588,212
Events in quadrant D9,445,010523,986

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230173
B0172302
C0164902
D0334622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79486628.329139%
B79481732.176648%
C7948520.654253%
D7948203025.541017%

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 8574 7952 321 321 3.74% 4.04%
B 8574 7952 22 22 0.26% 0.28%
C 8574 7952 0 0 0.00% 0.00%
D 8574 7952 1507 1507 17.58% 18.95%

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 8 5 1693542 8872.92 931 909 190.8
A 1 162 257213 1343.57 931 909 190.8
A 1 178 151108 787.36 931 909 190.8
B 4 239 213391 1133.24 963 937 187.5
B 15 204 76775 404.52 963 937 187.5
B 12 111 22330 114.11 963 937 187.5
C 8 128 9853 40.85 936 939 218.2
C 13 61 6987 27.72 936 939 218.2
C 15 225 5264 19.82 936 939 218.2
D 13 104 5803698 28422.7 848 822 204.2
D 8 195 147819 720.0 848 822 204.2
D 1 52 84897 411.8 848 822 204.2

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