ASTROSAT CZTI

Data Quality Report

Orbit 36639

Creation date: 2024-06-27T21:29:33.948383
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_049T03_9000005228_36639cztM0_level2.evt modeM0/AS1A11_049T03_9000005228_36639cztM0_level2_quad_clean.evt
Size (bytes)337,708,80068,140,800
Size322.1 MB 65.0 MB
Events in quadrant A1,988,807464,045
Events in quadrant B2,388,722460,310
Events in quadrant C2,254,543452,600
Events in quadrant D3,339,609420,698

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080631
B094601
C089211
D0125421

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A375480.213106%
B3754892.370804%
C3754782.077784%
D37542145.700586%

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 3754 3754 0 0 0.00% 0.00%
B 3754 3754 53 53 1.41% 1.41%
C 3754 3754 52 52 1.39% 1.39%
D 3754 3754 197 197 5.25% 5.25%

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 125153 1327.14 470 462 94.0
A 7 192 26848 280.84 470 462 94.0
A 9 143 17116 177.26 470 462 94.0
B 5 200 223119 2550.06 456 447 87.3
B 5 255 218726 2499.75 456 447 87.3
B 0 229 55632 631.98 456 447 87.3
C 0 10 176241 1702.48 446 449 103.3
C 14 254 159358 1538.97 446 449 103.3
C 15 214 157682 1522.74 446 449 103.3
D 12 235 1140046 10340.49 447 435 110.2
D 2 153 132648 1199.66 447 435 110.2
D 13 171 64744 583.52 447 435 110.2

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