ASTROSAT CZTI

Data Quality Report

Orbit 24351

Creation date: 2024-06-27T19:05:05.045763
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/AS1A07_145T01_9000003594_24351cztM0_level2.evt modeM0/AS1A07_145T01_9000003594_24351cztM0_level2_quad_clean.evt
Size (bytes)1,782,547,200223,738,560
Size1.7 GB 213.4 MB
Events in quadrant A8,304,8201,421,189
Events in quadrant B8,470,3651,474,083
Events in quadrant C13,773,3501,390,014
Events in quadrant D22,243,9781,268,098

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0362803
B0364743
C0530363
D0786483

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03620
B03620
C03620
D03620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A177192391.348835%
B177202881.625282%
C177207924.469526%
D17720354520.005643%

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 19254 17721 0 0 0.00% 0.00%
B 19255 17722 1 1 0.01% 0.01%
C 19255 17722 77 77 0.40% 0.43%
D 19255 17722 3015 3015 15.66% 17.01%

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 13 254 24832 52.63 2151 2097 432.0
A 3 137 19859 41.12 2151 2097 432.0
A 0 226 18331 37.58 2151 2097 432.0
B 12 111 51554 119.26 2154 2096 414.7
B 11 111 45479 104.61 2154 2096 414.7
B 14 111 40552 92.73 2154 2096 414.7
C 7 247 5079323 10646.05 2050 2062 476.9
C 2 16 359967 750.46 2050 2062 476.9
C 14 238 323664 674.34 2050 2062 476.9
D 7 238 4575113 9874.59 1931 1876 463.1
D 12 218 3409860 7358.56 1931 1876 463.1
D 8 195 3305803 7133.88 1931 1876 463.1

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