ASTROSAT CZTI

Data Quality Report

Orbit 16017

Creation date: 2024-06-27T17:16:50.129827
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/AS1T02_091T01_9000002368_16017cztM0_level2.evt modeM0/AS1T02_091T01_9000002368_16017cztM0_level2_quad_clean.evt
Size (bytes)814,049,280161,976,960
Size776.3 MB 154.5 MB
Events in quadrant A5,627,2471,038,131
Events in quadrant B6,489,3271,046,116
Events in quadrant C5,667,1471,014,795
Events in quadrant D6,069,488989,455

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02400
B02400
C02400
D02400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0242793
B0266792
C0242282
D0258472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11817890.753152%
B118172672.259457%
C118171070.905475%
D118171401.184734%

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 13253 11818 1 1 0.01% 0.01%
B 13253 11818 157 157 1.18% 1.33%
C 13253 11818 0 0 0.00% 0.00%
D 13253 11818 83 83 0.63% 0.70%

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 9 143 28790 93.4 1443 1417 293.1
A 12 96 20154 63.93 1443 1417 293.1
A 15 157 17687 55.52 1443 1417 293.1
B 4 173 575319 2085.91 1435 1402 275.1
B 15 222 100923 361.71 1435 1402 275.1
B 5 172 37433 130.96 1435 1402 275.1
C 14 238 212296 651.19 1380 1393 323.9
C 3 233 65482 197.88 1380 1393 323.9
C 10 22 13945 38.75 1380 1393 323.9
D 2 14 536104 1542.18 1398 1355 346.7
D 2 152 114781 327.11 1398 1355 346.7
D 12 110 69408 196.26 1398 1355 346.7

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