ASTROSAT CZTI

Data Quality Report

Orbit 13715

Creation date: 2024-06-27T16:45:07.290403
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/AS1T02_041T01_9000002032_13715cztM0_level2.evt modeM0/AS1T02_041T01_9000002032_13715cztM0_level2_quad_clean.evt
Size (bytes)1,214,349,120331,905,600
Size1.1 GB 316.5 MB
Events in quadrant A8,062,7742,190,123
Events in quadrant B8,663,5122,242,183
Events in quadrant C9,904,0432,226,475
Events in quadrant D8,941,8382,167,589

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0363314
B0375003
C0410093
D0385203

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03620
B03620
C03620
D03620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17812940.527734%
B178121500.842129%
C178125082.852010%
D178121560.875814%

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 19498 17816 14 14 0.07% 0.08%
B 19498 17816 20 20 0.10% 0.11%
C 19498 17816 259 259 1.33% 1.45%
D 19498 17816 38 38 0.19% 0.21%

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 15 69 87924 204.91 2066 2015 419.2
A 1 162 18583 39.52 2066 2015 419.2
A 0 226 18245 38.71 2066 2015 419.2
B 0 219 125303 314.86 2076 2020 391.6
B 4 173 90751 226.61 2076 2020 391.6
B 8 250 81087 201.93 2076 2020 391.6
C 4 254 1561469 3383.27 2017 2027 460.9
C 3 233 452039 976.32 2017 2027 460.9
C 4 238 22201 43.77 2017 2027 460.9
D 1 52 590804 1226.83 2027 1971 480.0
D 8 195 317233 656.85 2027 1971 480.0
D 10 157 189404 390.52 2027 1971 480.0

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