ASTROSAT CZTI

Data Quality Report

Orbit 02136

Creation date: 2024-06-27T14:14:27.553101
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/AS1T01_072T02_9000000336_02136cztM0_level2.evt modeM0/AS1T01_072T02_9000000336_02136cztM0_level2_quad_clean.evt
Size (bytes)398,376,00087,672,960
Size379.9 MB 83.6 MB
Events in quadrant A2,638,226562,328
Events in quadrant B3,230,688567,081
Events in quadrant C2,545,414552,346
Events in quadrant D3,222,099534,201

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128311
B0140731
C0127121
D0148351

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B110
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6289310.492924%
B6289250.397519%
C6289120.190809%
D62892844.515821%

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 7019 6290 0 0 0.00% 0.00%
B 7019 6290 21 21 0.30% 0.33%
C 7019 6290 0 0 0.00% 0.00%
D 7019 6290 302 302 4.30% 4.80%

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 0 231 62959 472.17 665 654 132.0
A 15 171 18418 134.62 665 654 132.0
A 0 1 3465 21.3 665 654 132.0
B 5 68 413345 3314.27 680 668 124.5
B 4 48 130511 1042.79 680 668 124.5
B 0 234 35972 283.53 680 668 124.5
C 1 3 9343 61.1 645 647 142.3
C 9 236 4498 27.06 645 647 142.3
C 10 82 4417 26.49 645 647 142.3
D 2 31 752225 5185.64 637 623 144.9
D 9 64 18386 122.55 637 623 144.9
D 10 199 11335 73.91 637 623 144.9

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