ASTROSAT CZTI

Data Quality Report

Orbit 31329

Creation date: 2024-06-27T20:26:48.474696
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/AS1T04_025T01_9000004538_31329cztM0_level2.evt modeM0/AS1T04_025T01_9000004538_31329cztM0_level2_quad_clean.evt
Size (bytes)592,960,320137,321,280
Size565.5 MB 131.0 MB
Events in quadrant A3,401,779947,021
Events in quadrant B6,158,763906,030
Events in quadrant C3,594,781899,693
Events in quadrant D4,308,182898,468

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149561
B0237721
C0153891
D0178421

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7296430.589364%
B72964135.660636%
C72961712.343750%
D72971091.493765%

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 7536 7297 0 0 0.00% 0.00%
B 7536 7297 165 165 2.19% 2.26%
C 7536 7297 2 2 0.03% 0.03%
D 7537 7298 86 86 1.14% 1.18%

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 5 16 38092 213.13 871 852 174.7
A 13 254 14215 76.48 871 852 174.7
A 3 137 8751 45.21 871 852 174.7
B 6 159 2028044 12497.86 836 813 162.2
B 5 172 609464 3752.33 836 813 162.2
B 0 190 69967 426.33 836 813 162.2
C 14 238 165860 858.18 820 821 192.3
C 3 233 133076 687.71 820 821 192.3
C 14 254 44870 229.05 820 821 192.3
D 8 195 828136 4112.74 839 813 201.2
D 12 233 181676 899.1 839 813 201.2
D 7 69 44963 219.48 839 813 201.2

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