ASTROSAT CZTI

Data Quality Report

Orbit 00698

Creation date: 2024-06-27T14:01:43.653847
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/AS1P01_141T01_9000000100_00698cztM0_level2.evt modeM0/AS1P01_141T01_9000000100_00698cztM0_level2_quad_clean.evt
Size (bytes)1,215,423,36077,469,120
Size1.1 GB 73.9 MB
Events in quadrant A8,666,970476,175
Events in quadrant B8,784,864479,455
Events in quadrant C10,807,428463,087
Events in quadrant D8,103,280455,196

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0305643
B0309101
C0368471
D0289061

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67641382.040213%
B67641412.084565%
C67651472.172949%
D6765831.226903%

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 6964 6766 446 446 6.40% 6.59%
B 6964 6766 489 489 7.02% 7.23%
C 6965 6767 853 853 12.25% 12.61%
D 6965 6767 358 358 5.14% 5.29%

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 15 69 285015 533.74 2178 2197 529.9
A 5 203 19070 31.84 2178 2197 529.9
A 15 53 8442 11.78 2178 2197 529.9
B 7 221 283265 532.95 2221 2238 527.3
B 0 230 24230 41.71 2221 2238 527.3
B 3 6 22094 37.66 2221 2238 527.3
C 3 127 1143308 2023.02 2012 2088 564.1
C 3 31 336222 592.31 2012 2088 564.1
C 3 95 285936 503.17 2012 2088 564.1
D 0 25 401485 643.16 1989 2061 621.0
D 1 4 210176 335.11 1989 2061 621.0
D 2 152 16438 23.15 1989 2061 621.0

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