ASTROSAT CZTI

Data Quality Report

Orbit 24588

Creation date: 2024-06-27T19:07:36.690758
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/AS1T03_188T01_9000003612_24588cztM0_level2.evt modeM0/AS1T03_188T01_9000003612_24588cztM0_level2_quad_clean.evt
Size (bytes)1,537,511,040228,839,040
Size1.4 GB 218.2 MB
Events in quadrant A8,358,1601,475,393
Events in quadrant B10,367,4901,482,031
Events in quadrant C11,672,4551,404,156
Events in quadrant D14,984,8381,360,725

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360563
B0418283
C0462303
D0566035

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03580
B03580
C03580
D03580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A175251350.770328%
B175266683.811480%
C175265873.349310%
D175257864.485021%

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 20215 17527 1 1 0.00% 0.01%
B 20216 17527 318 318 1.57% 1.81%
C 20216 17529 151 151 0.75% 0.86%
D 20215 17527 719 719 3.56% 4.10%

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 10 255 33225 72.48 2159 2115 429.2
A 13 254 27600 59.38 2159 2115 429.2
A 3 137 19369 40.2 2159 2115 429.2
B 3 64 1975633 4903.9 2120 2065 402.4
B 12 111 48378 115.08 2120 2065 402.4
B 11 111 44041 104.3 2120 2065 402.4
C 7 247 2923992 6107.8 2066 2079 478.4
C 2 16 337300 700.73 2066 2079 478.4
C 14 238 328639 682.62 2066 2079 478.4
D 8 195 4887743 9763.46 2078 2017 500.4
D 1 255 1444329 2882.26 2078 2017 500.4
D 1 52 720067 1434.92 2078 2017 500.4

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