ASTROSAT CZTI

Data Quality Report

Orbit 00830

Creation date: 2024-06-27T14:03:30.911685
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_010T01_9000000112_00830cztM0_level2.evt modeM0/AS1P01_010T01_9000000112_00830cztM0_level2_quad_clean.evt
Size (bytes)1,123,980,480102,873,600
Size1.0 GB 98.1 MB
Events in quadrant A8,267,628668,309
Events in quadrant B8,804,322672,782
Events in quadrant C8,340,892654,659
Events in quadrant D8,164,273633,384

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0295160
B0311170
C0297370
D0292520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A698120.028649%
B6981230.329466%
C698270.100258%
D69821151.647093%

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 6981 6981 281 281 4.03% 4.03%
B 6981 6981 365 365 5.23% 5.23%
C 6982 6982 300 300 4.30% 4.30%
D 6982 6982 394 394 5.64% 5.64%

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 11 79 9866 14.75 2153 2168 521.7
A 3 111 6431 8.17 2153 2168 521.7
A 12 189 6178 7.69 2153 2168 521.7
B 5 65 48138 86.43 2259 2269 530.7
B 15 255 36272 64.07 2259 2269 530.7
B 0 220 31454 54.99 2259 2269 530.7
C 15 241 239662 413.51 2046 2117 574.5
C 10 34 48661 81.02 2046 2117 574.5
C 3 111 34530 56.42 2046 2117 574.5
D 13 200 411288 672.77 1950 2021 608.3
D 7 207 148770 241.23 1950 2021 608.3
D 13 13 79517 127.39 1950 2021 608.3

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