ASTROSAT CZTI

Data Quality Report

Orbit 01556

Creation date: 2024-06-27T14:12:24.966832
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/AS1G02_019T04_9000000262_01556cztM0_level2.evt modeM0/AS1G02_019T04_9000000262_01556cztM0_level2_quad_clean.evt
Size (bytes)1,078,804,80085,561,920
Size1.0 GB 81.6 MB
Events in quadrant A8,202,441525,495
Events in quadrant B8,375,286539,822
Events in quadrant C7,695,046531,256
Events in quadrant D7,939,492511,993

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0292852
B0297961
C0278191
D0285581

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6926390.563096%
B6926290.418712%
C6926140.202137%
D6926751.082876%

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 7536 6926 191 191 2.53% 2.76%
B 7536 6927 191 191 2.53% 2.76%
C 7536 6927 130 130 1.73% 1.88%
D 7536 6927 304 304 4.03% 4.39%

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 12 251 13153 21.23 2140 2160 517.8
A 10 2 8364 11.98 2140 2160 517.8
A 8 14 5663 6.77 2140 2160 517.8
B 0 220 24941 43.51 2201 2215 522.3
B 4 216 9171 13.32 2201 2215 522.3
B 4 52 7930 10.94 2201 2215 522.3
C 8 208 11943 17.97 1966 2035 551.4
C 7 159 8569 11.85 1966 2035 551.4
C 14 223 5250 5.83 1966 2035 551.4
D 10 84 232549 384.69 1924 1992 599.3
D 13 105 200443 331.12 1924 1992 599.3
D 12 33 90184 147.15 1924 1992 599.3

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