ASTROSAT CZTI

Data Quality Report

Orbit 20229

Creation date: 2024-06-27T18:12:42.411381
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_117T01_9000002998_20229cztM0_level2.evt modeM0/AS1A05_117T01_9000002998_20229cztM0_level2_quad_clean.evt
Size (bytes)1,459,872,000239,774,400
Size1.4 GB 228.7 MB
Events in quadrant A8,796,3951,567,026
Events in quadrant B9,666,7921,560,555
Events in quadrant C8,992,8631,502,621
Events in quadrant D15,520,8871,370,615

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0379264
B0407524
C0378544
D0582904

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03740
B03740
C03740
D03740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182981250.683135%
B182982781.519292%
C182981881.027435%
D18298202411.061318%

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 20283 18301 25 25 0.12% 0.14%
B 20283 18301 45 45 0.22% 0.25%
C 20283 18301 1 1 0.00% 0.01%
D 20283 18301 1852 1852 9.13% 10.12%

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 14 238 109442 239.87 2220 2175 447.2
A 10 253 76295 165.75 2220 2175 447.2
A 4 2 68141 147.51 2220 2175 447.2
B 7 220 285874 682.99 2196 2140 415.4
B 0 197 225650 538.02 2196 2140 415.4
B 0 198 176637 420.04 2196 2140 415.4
C 3 233 342171 682.94 2127 2142 497.9
C 14 238 332147 662.81 2127 2142 497.9
C 13 61 15031 25.89 2127 2142 497.9
D 7 238 4945316 9783.78 2079 2020 505.3
D 1 52 1549903 3063.57 2079 2020 505.3
D 12 218 284305 558.7 2079 2020 505.3

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