ASTROSAT CZTI

Data Quality Report

Orbit 05045

Creation date: 2024-06-27T14:50:36.152349
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/AS1G05_250T02_9000000638_05045cztM0_level2.evt modeM0/AS1G05_250T02_9000000638_05045cztM0_level2_quad_clean.evt
Size (bytes)1,345,976,640217,900,800
Size1.3 GB 207.8 MB
Events in quadrant A9,130,8201,314,471
Events in quadrant B10,578,1901,318,777
Events in quadrant C8,603,4661,340,053
Events in quadrant D11,119,8351,270,658

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04040
B04040
C04040
D04040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0416146
B0455405
C0400705
D0476655

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A196682131.082977%
B196683771.916819%
C19668920.467765%
D196686363.233679%

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 21633 19673 57 57 0.26% 0.29%
B 21633 19673 94 94 0.43% 0.48%
C 21633 19673 0 0 0.00% 0.00%
D 21633 19673 377 377 1.74% 1.92%

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 13 251 258549 566.66 2221 2170 452.4
A 15 234 169552 369.96 2221 2170 452.4
A 15 174 108321 234.62 2221 2170 452.4
B 15 204 1311613 3076.99 2242 2186 425.6
B 10 247 350447 818.37 2242 2186 425.6
B 0 219 130304 301.06 2242 2186 425.6
C 14 67 62350 120.13 2174 2181 500.9
C 8 128 18644 32.87 2174 2181 500.9
C 9 54 18641 32.86 2174 2181 500.9
D 1 7 818452 1577.25 2136 2067 517.6
D 13 235 634713 1222.27 2136 2067 517.6
D 2 136 587299 1130.66 2136 2067 517.6

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