ASTROSAT CZTI

Data Quality Report

Orbit 20741

Creation date: 2024-06-27T18:19:02.672144
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_063T03_9000003066_20741cztM0_level2.evt modeM0/AS1A05_063T03_9000003066_20741cztM0_level2_quad_clean.evt
Size (bytes)1,220,296,320244,284,480
Size1.1 GB 233.0 MB
Events in quadrant A8,415,4761,635,497
Events in quadrant B8,923,3531,613,807
Events in quadrant C8,231,5601,536,889
Events in quadrant D10,316,4861,519,584

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0348004
B0363143
C0339436
D0408313

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03260
D03260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370
B0370
C0370
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A158461841.161176%
B158453192.013253%
C158452411.520985%
D158473492.202310%

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 19582 15848 0 0 0.00% 0.00%
B 19581 15846 78 78 0.40% 0.49%
C 19580 15847 6 6 0.03% 0.04%
D 19582 15850 194 194 0.99% 1.22%

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 6 240 134880 314.36 2154 2117 422.3
A 0 226 18599 39.03 2154 2117 422.3
A 3 137 16218 33.39 2154 2117 422.3
B 7 220 458032 1171.52 2107 2058 389.2
B 0 197 82536 206.77 2107 2058 389.2
B 0 229 50655 124.86 2107 2058 389.2
C 14 238 323336 694.36 2015 2032 462.7
C 9 54 32399 65.62 2015 2032 462.7
C 7 247 19218 37.14 2015 2032 462.7
D 5 222 1515865 3058.84 2068 2011 494.9
D 1 52 515767 1038.08 2068 2011 494.9
D 1 20 373845 751.31 2068 2011 494.9

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