ASTROSAT CZTI

Data Quality Report

Orbit 18347

Creation date: 2024-06-27T17:48:39.037144
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/AS1A06_006T01_9000002720_18347cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18347cztM0_level2_quad_clean.evt
Size (bytes)1,258,894,080221,829,120
Size1.2 GB 211.6 MB
Events in quadrant A8,421,0661,397,476
Events in quadrant B9,015,2961,399,177
Events in quadrant C8,513,0041,365,633
Events in quadrant D10,961,2531,317,613

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370433
B0384443
C0371403
D0452063

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A179641040.578936%
B179651740.968550%
C179651720.957417%
D1796510585.889229%

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 19724 17967 6 6 0.03% 0.03%
B 19725 17968 28 28 0.14% 0.16%
C 19725 17968 10 10 0.05% 0.06%
D 19725 17968 636 636 3.22% 3.54%

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 15 174 116754 263.36 2147 2097 435.4
A 4 2 37200 80.63 2147 2097 435.4
A 0 226 19019 38.87 2147 2097 435.4
B 7 220 272128 654.24 2151 2099 412.7
B 4 216 69430 163.13 2151 2099 412.7
B 0 197 66392 155.77 2151 2099 412.7
C 14 238 312197 642.72 2055 2066 482.5
C 0 207 93775 190.06 2055 2066 482.5
C 3 233 80424 162.39 2055 2066 482.5
D 1 52 2395282 4807.37 2048 1990 497.8
D 7 238 211952 421.75 2048 1990 497.8
D 14 34 134218 265.6 2048 1990 497.8

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