ASTROSAT CZTI

Data Quality Report

Orbit 11454

Creation date: 2024-06-27T16:13:10.166654
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_021T03_9000001678_11454cztM0_level2.evt modeM0/AS1A04_021T03_9000001678_11454cztM0_level2_quad_clean.evt
Size (bytes)745,413,120114,805,440
Size710.9 MB 109.5 MB
Events in quadrant A3,951,212726,491
Events in quadrant B5,696,329716,565
Events in quadrant C3,781,057783,717
Events in quadrant D8,594,763683,299

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174023
B0224742
C0169732
D0310832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8154810.993377%
B81545356.561197%
C8154360.441501%
D8154158119.389257%

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 8505 8157 4 4 0.05% 0.05%
B 8505 8157 217 217 2.55% 2.66%
C 8505 8157 0 0 0.00% 0.00%
D 8505 8157 1231 1231 14.47% 15.09%

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 61212 306.03 963 940 196.9
A 1 178 35094 173.42 963 940 196.9
A 9 143 33314 164.38 963 940 196.9
B 4 239 1486372 8176.37 952 924 181.7
B 11 51 233981 1282.82 952 924 181.7
B 15 204 74659 405.86 952 924 181.7
C 8 128 9797 39.2 965 970 225.2
C 13 61 7103 27.24 965 970 225.2
C 8 112 6189 23.18 965 970 225.2
D 1 52 2635578 12611.84 863 836 208.9
D 10 253 1879442 8992.41 863 836 208.9
D 8 195 346110 1652.74 863 836 208.9

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