ASTROSAT CZTI

Data Quality Report

Orbit 25351

Creation date: 2024-06-27T19:16:40.772038
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/AS1A09_059T01_9000003706_25351cztM0_level2.evt modeM0/AS1A09_059T01_9000003706_25351cztM0_level2_quad_clean.evt
Size (bytes)559,774,080112,968,000
Size533.8 MB 107.7 MB
Events in quadrant A3,561,173741,727
Events in quadrant B3,702,401746,842
Events in quadrant C4,053,215713,502
Events in quadrant D5,121,011691,213

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157140
B0160850
C0170330
D0202930

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7588480.632578%
B7588660.869794%
C75881532.016342%
D75883244.269900%

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 7938 7589 7 7 0.09% 0.09%
B 7938 7589 2 2 0.03% 0.03%
C 7938 7589 23 23 0.29% 0.30%
D 7938 7589 245 245 3.09% 3.23%

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 8 192 25140 131.55 915 895 184.3
A 13 254 12344 62.12 915 895 184.3
A 3 137 8320 40.29 915 895 184.3
B 3 112 42757 241.53 909 885 173.4
B 5 235 31448 176.29 909 885 173.4
B 0 229 25360 141.18 909 885 173.4
C 9 54 351627 1692.55 882 888 207.2
C 14 238 141528 678.68 882 888 207.2
C 3 233 117732 563.85 882 888 207.2
D 12 233 1051570 4900.57 884 859 214.4
D 1 52 341263 1587.66 884 859 214.4
D 8 195 183672 852.65 884 859 214.4

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