ASTROSAT CZTI

Data Quality Report

Orbit 23283

Creation date: 2024-06-27T18:52:20.312102
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/AS1C05_012T03_9000003442_23283cztM0_level2.evt modeM0/AS1C05_012T03_9000003442_23283cztM0_level2_quad_clean.evt
Size (bytes)139,429,44036,072,000
Size133.0 MB 34.4 MB
Events in quadrant A896,787240,817
Events in quadrant B932,297246,802
Events in quadrant C909,909237,346
Events in quadrant D1,351,456228,099

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039431
B039842
C039491
D054191

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1914190.992685%
B1913371.934135%
C1913231.202300%
D1913703.659174%

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 2654 1916 0 0 0.00% 0.00%
B 2653 1915 2 2 0.08% 0.10%
C 2653 1915 0 0 0.00% 0.00%
D 2653 1915 26 26 0.98% 1.36%

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 6 16 4768 93.92 231 226 48.4
A 13 254 2957 56.47 231 226 48.4
A 3 137 2173 40.26 231 226 48.4
B 4 173 11592 242.85 232 226 46.8
B 5 172 9926 207.25 232 226 46.8
B 12 111 5859 120.35 232 226 46.8
C 14 238 34584 641.61 220 221 53.6
C 10 9 9365 170.73 220 221 53.6
C 3 233 3066 53.12 220 221 53.6
D 7 238 402451 7392.69 218 210 54.4
D 1 52 101686 1865.0 218 210 54.4
D 2 120 15637 283.53 218 210 54.4

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