ASTROSAT CZTI

Data Quality Report

Orbit 31995

Creation date: 2024-06-27T20:34:57.499635
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/AS1A10_058T12_9000004674_31995cztM0_level2.evt modeM0/AS1A10_058T12_9000004674_31995cztM0_level2_quad_clean.evt
Size (bytes)136,330,56011,246,400
Size130.0 MB 10.7 MB
Events in quadrant A734,31661,131
Events in quadrant B1,217,05959,630
Events in quadrant C1,142,48556,278
Events in quadrant D934,14855,098

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029550
B046080
C044650
D036060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A144440.277008%
B1444483.324100%
C1444684.709141%
D1445231.591696%

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 1444 1444 0 0 0.00% 0.00%
B 1444 1444 22 22 1.52% 1.52%
C 1444 1444 6 6 0.42% 0.42%
D 1445 1445 25 25 1.73% 1.73%

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 1 113 7181 175.73 187 182 39.8
A 13 6 5208 126.19 187 182 39.8
A 13 254 2617 61.14 187 182 39.8
B 6 159 373497 9900.04 182 177 37.7
B 10 245 57213 1512.53 182 177 37.7
B 5 172 33532 884.54 182 177 37.7
C 3 233 364390 8430.94 175 176 43.2
C 14 238 31617 727.81 175 176 43.2
C 10 22 25511 586.46 175 176 43.2
D 11 164 206117 4529.48 180 175 45.5
D 8 195 29981 655.55 180 175 45.5
D 2 234 7836 168.5 180 175 45.5

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