ASTROSAT CZTI

Data Quality Report

Orbit 26285

Creation date: 2024-06-27T19:27:00.950213
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/AS1A09_044T01_9000003792_26285cztM0_level2.evt modeM0/AS1A09_044T01_9000003792_26285cztM0_level2_quad_clean.evt
Size (bytes)81,826,56026,389,440
Size78.0 MB 25.2 MB
Events in quadrant A601,327177,742
Events in quadrant B597,415187,665
Events in quadrant C589,086178,882
Events in quadrant D614,597172,824

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023960
B023910
C023600
D024520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106520.187793%
B106500.000000%
C106550.469484%
D106530.281690%

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 1065 1065 4 4 0.38% 0.38%
B 1065 1065 0 0 0.00% 0.00%
C 1065 1065 0 0 0.00% 0.00%
D 1065 1065 2 2 0.19% 0.19%

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 13 38040 1223.09 145 143 31.0
A 13 254 2298 69.55 145 143 31.0
A 0 226 1294 37.15 145 143 31.0
B 7 219 6943 230.81 149 147 29.4
B 0 230 3658 119.24 149 147 29.4
B 7 235 3371 109.49 149 147 29.4
C 14 238 23561 665.9 142 144 35.2
C 4 254 5538 153.39 142 144 35.2
C 3 233 3982 109.14 142 144 35.2
D 1 52 71596 2049.67 140 137 34.9
D 8 195 5795 162.29 140 137 34.9
D 2 234 4444 123.54 140 137 34.9

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