ASTROSAT CZTI

Data Quality Report

Orbit 20689

Creation date: 2024-06-27T18:18:23.993005
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_229T02_9000003060_20689cztM0_level2.evt modeM0/AS1A05_229T02_9000003060_20689cztM0_level2_quad_clean.evt
Size (bytes)574,917,120114,888,960
Size548.3 MB 109.6 MB
Events in quadrant A3,652,642754,494
Events in quadrant B3,952,287756,174
Events in quadrant C3,675,900730,384
Events in quadrant D5,603,067697,490

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161162
B0168972
C0160842
D0218242

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7778440.565698%
B77781171.504243%
C7778911.169967%
D77782963.805606%

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 8483 7780 0 0 0.00% 0.00%
B 8483 7780 16 16 0.19% 0.21%
C 8483 7780 0 0 0.00% 0.00%
D 8483 7780 266 266 3.14% 3.42%

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 0 226 8400 39.11 947 927 191.1
A 3 137 7830 36.13 947 927 191.1
A 12 194 6778 30.62 947 927 191.1
B 7 220 184675 1026.45 940 919 179.0
B 0 190 25110 135.13 940 919 179.0
B 12 111 21446 114.66 940 919 179.0
C 14 238 140360 655.14 900 903 212.9
C 7 247 12694 55.39 900 903 212.9
C 3 233 10408 44.65 900 903 212.9
D 1 52 1105782 5051.0 902 875 218.7
D 5 222 643133 2936.04 902 875 218.7
D 12 227 280877 1280.01 902 875 218.7

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