ASTROSAT CZTI

Data Quality Report

Orbit 12495

Creation date: 2024-06-27T16:28:12.501023
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_174T01_9000001850_12495cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12495cztM0_level2_quad_clean.evt
Size (bytes)567,221,76083,727,360
Size540.9 MB 79.8 MB
Events in quadrant A4,334,621505,472
Events in quadrant B3,954,369516,954
Events in quadrant C3,605,233513,272
Events in quadrant D4,771,632473,984

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178022
B0164431
C0157471
D0192341

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75662823.727201%
B75663214.242665%
C75661662.194026%
D75663094.084060%

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 7637 7568 0 0 0.00% 0.00%
B 7637 7570 21 21 0.27% 0.28%
C 7637 7570 0 0 0.00% 0.00%
D 7637 7570 72 72 0.94% 0.95%

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 12 189 215947 1120.73 931 911 191.9
A 1 162 160364 831.04 931 911 191.9
A 1 178 94392 487.21 931 911 191.9
B 4 239 226732 1239.29 939 917 182.2
B 0 214 22809 120.15 939 917 182.2
B 12 111 21070 110.6 939 917 182.2
C 14 234 7047 28.39 922 930 215.5
C 13 61 6736 26.95 922 930 215.5
C 8 222 2579 7.65 922 930 215.5
D 1 52 969836 4420.21 900 875 219.2
D 13 104 100005 452.21 900 875 219.2
D 7 71 90049 406.79 900 875 219.2

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