ASTROSAT CZTI

Data Quality Report

Orbit 18258

Creation date: 2024-06-27T17:47:30.109201
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/AS1A05_019T01_9000002718_18258cztM0_level2.evt modeM0/AS1A05_019T01_9000002718_18258cztM0_level2_quad_clean.evt
Size (bytes)543,245,760100,788,480
Size518.1 MB 96.1 MB
Events in quadrant A3,757,131655,380
Events in quadrant B3,642,265663,250
Events in quadrant C3,554,342624,402
Events in quadrant D4,997,977595,751

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159311
B0156591
C0153771
D0197761

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7367841.140220%
B7367680.923035%
C7367761.031628%
D73675106.922764%

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 7722 7368 41 41 0.53% 0.56%
B 7722 7368 9 9 0.12% 0.12%
C 7722 7368 8 8 0.10% 0.11%
D 7722 7368 357 357 4.62% 4.85%

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 15 174 352979 1959.89 879 859 179.7
A 10 228 21668 115.82 879 859 179.7
A 0 226 7587 37.45 879 859 179.7
B 7 220 132485 776.36 876 852 169.6
B 4 171 49022 284.1 876 852 169.6
B 12 111 19851 112.05 876 852 169.6
C 14 238 127851 646.07 837 840 196.6
C 0 207 124616 629.61 837 840 196.6
C 3 233 21132 103.22 837 840 196.6
D 7 238 992296 4887.79 836 811 202.8
D 1 52 779748 3839.98 836 811 202.8
D 2 234 32824 157.82 836 811 202.8

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