ASTROSAT CZTI

Data Quality Report

Orbit 00982

Creation date: 2024-06-27T14:05:40.841376
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_998T01_9000000188_00982cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00982cztM0_level2_quad_clean.evt
Size (bytes)1,027,376,64093,000,960
Size979.8 MB 88.7 MB
Events in quadrant A7,651,324617,774
Events in quadrant B7,533,293623,160
Events in quadrant C7,071,944595,911
Events in quadrant D8,465,456565,569

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0269160
B0265200
C0252150
D0294100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5924891.502363%
B5924380.641458%
C5924230.388251%
D59245048.507765%

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 7049 5925 320 320 4.54% 5.40%
B 7049 5925 252 252 3.57% 4.25%
C 7049 5925 156 156 2.21% 2.63%
D 7049 5925 906 906 12.85% 15.29%

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 14 170 435894 979.35 1841 1853 443.2
A 13 164 115000 255.3 1841 1853 443.2
A 15 233 22799 47.26 1841 1853 443.2
B 0 220 109434 243.04 1895 1906 442.4
B 5 249 51193 111.4 1895 1906 442.4
B 7 221 36328 77.8 1895 1906 442.4
C 15 241 300182 626.34 1716 1773 476.4
C 3 79 25317 49.42 1716 1773 476.4
C 3 111 25113 48.99 1716 1773 476.4
D 1 4 1134592 2279.51 1665 1710 497.0
D 1 83 919833 1847.38 1665 1710 497.0
D 12 22 113098 224.13 1665 1710 497.0

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