ASTROSAT CZTI

Data Quality Report

Orbit 01175

Creation date: 2024-06-27T14:08:40.488695
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/AS1P01_997T02_9000000218_01175cztM0_level2.evt modeM0/AS1P01_997T02_9000000218_01175cztM0_level2_quad_clean.evt
Size (bytes)1,074,646,080100,031,040
Size1.0 GB 95.4 MB
Events in quadrant A8,002,233656,651
Events in quadrant B8,543,091651,055
Events in quadrant C8,145,774631,790
Events in quadrant D7,416,729629,103

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0285032
B0301001
C0288921
D0268051

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6609911.376910%
B6609310.469057%
C6609721.089424%
D66091121.694659%

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 7079 6610 324 324 4.58% 4.90%
B 7079 6610 386 386 5.45% 5.84%
C 7079 6610 293 293 4.14% 4.43%
D 7079 6610 292 292 4.12% 4.42%

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 11 79 8717 13.15 2081 2098 503.5
A 12 251 8154 12.03 2081 2098 503.5
A 3 111 6572 8.89 2081 2098 503.5
B 2 32 242162 475.97 2113 2121 504.3
B 6 53 80890 156.19 2113 2121 504.3
B 15 22 63316 121.34 2113 2121 504.3
C 15 241 306450 568.55 1920 1986 535.5
C 12 254 146806 270.43 1920 1986 535.5
C 9 83 136827 251.8 1920 1986 535.5
D 1 239 112343 187.37 1898 1965 589.1
D 2 16 93131 154.76 1898 1965 589.1
D 10 215 33111 52.87 1898 1965 589.1

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