ASTROSAT CZTI

Data Quality Report

Orbit 10646

Creation date: 2024-06-27T16:01:56.548307
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/AS1T01_191T01_9000001536_10646cztM0_level2.evt modeM0/AS1T01_191T01_9000001536_10646cztM0_level2_quad_clean.evt
Size (bytes)894,458,880184,253,760
Size853.0 MB 175.7 MB
Events in quadrant A5,870,0081,209,410
Events in quadrant B8,156,3141,182,341
Events in quadrant C5,584,1831,221,187
Events in quadrant D6,678,6291,150,190

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02400
B02400
C02400
D02400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249553
B0317042
C0244092
D0270642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A118231311.108010%
B118237546.377400%
C118231120.947306%
D118231651.395585%

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 12993 11825 0 0 0.00% 0.00%
B 12993 11825 417 417 3.21% 3.53%
C 12993 11825 17 17 0.13% 0.14%
D 12993 11825 65 65 0.50% 0.55%

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 1 162 103482 343.46 1432 1405 297.2
A 15 174 79873 264.02 1432 1405 297.2
A 1 178 41725 135.66 1432 1405 297.2
B 4 239 2314657 8635.66 1395 1365 267.9
B 0 168 164253 608.07 1395 1365 267.9
B 0 214 74491 272.98 1395 1365 267.9
C 4 254 101347 308.34 1384 1400 324.1
C 14 234 86685 263.11 1384 1400 324.1
C 13 61 10190 27.12 1384 1400 324.1
D 8 195 435169 1279.03 1384 1351 339.2
D 7 71 170917 499.93 1384 1351 339.2
D 2 16 165448 483.81 1384 1351 339.2

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