ASTROSAT CZTI

Data Quality Report

Orbit 37826

Creation date: 2024-06-27T21:44:58.269112
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/AS1T05_054T01_9000005350_37826cztM0_level2.evt modeM0/AS1T05_054T01_9000005350_37826cztM0_level2_quad_clean.evt
Size (bytes)409,354,56080,939,520
Size390.4 MB 77.2 MB
Events in quadrant A2,790,291536,850
Events in quadrant B2,902,644536,590
Events in quadrant C2,759,187524,860
Events in quadrant D3,598,358494,869

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112972
B0118841
C0112561
D0139161

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5104150.293887%
B5104340.666144%
C5104360.705329%
D51042294.486677%

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 7226 5104 9 9 0.12% 0.18%
B 7226 5103 21 21 0.29% 0.41%
C 7226 5103 38 38 0.53% 0.74%
D 7226 5103 253 253 3.50% 4.96%

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 10 83 336752 2749.79 611 601 122.2
A 9 143 31986 256.74 611 601 122.2
A 13 6 26660 213.17 611 601 122.2
B 5 172 145930 1269.97 604 589 114.4
B 4 171 108064 939.1 604 589 114.4
B 0 229 104721 909.89 604 589 114.4
C 15 214 217612 1634.19 577 582 132.8
C 0 10 122632 919.01 577 582 132.8
C 15 159 77093 576.11 577 582 132.8
D 2 249 336254 2387.26 577 561 140.6
D 12 233 326231 2315.98 577 561 140.6
D 12 218 147842 1047.38 577 561 140.6

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