ASTROSAT CZTI

Data Quality Report

Orbit 36505

Creation date: 2022-06-29T14:46:02.655344
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/AS1A11_049T05_9000005212_36505cztM0_level2.evt modeM0/AS1A11_049T05_9000005212_36505cztM0_level2_quad_clean.evt
Size (bytes)308,882,88053,706,240
Size294.6 MB 51.2 MB
Events in quadrant A2,022,835349,413
Events in quadrant B2,061,471351,796
Events in quadrant C1,967,027348,258
Events in quadrant D3,058,144322,222

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A081211
B082861
C078421
D0114091

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3591401.113896%
B3591411.141743%
C3591661.837928%
D35912045.680869%

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 3591 3591 30 30 0.84% 0.84%
B 3591 3591 26 26 0.72% 0.72%
C 3591 3591 40 40 1.11% 1.11%
D 3591 3591 253 253 7.05% 7.05%

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 7 3 191707 2152.14 439 432 88.9
A 10 83 113641 1273.78 439 432 88.9
A 9 143 13971 152.33 439 432 88.9
B 5 172 247488 2966.38 431 420 83.3
B 0 189 70279 838.75 431 420 83.3
B 5 255 12351 143.25 431 420 83.3
C 0 10 160151 1623.21 422 424 98.4
C 15 214 151907 1539.44 422 424 98.4
C 15 159 2932 25.49 422 424 98.4
D 12 227 687679 6658.37 423 412 103.2
D 1 20 396679 3839.11 423 412 103.2
D 13 249 103177 995.61 423 412 103.2

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