ASTROSAT CZTI

Data Quality Report

Orbit 38376

Creation date: 2024-06-27T21:52:05.914232
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/AS1A12_006T08_9000005378_38376cztM0_level2.fits modeM0/AS1A12_006T08_9000005378_38376cztM0_level2_quad_clean.evt
Size (bytes)102,242,88024,229,440
Size97.5 MB 23.1 MB
Events in quadrant A810,214165,640
Events in quadrant B676,274173,206
Events in quadrant C655,408160,908
Events in quadrant D1,546,275143,389

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A032251
B027111
C026081
D054311

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1207241.988401%
B120740.331400%
C120740.331400%
D1207554.556752%

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 1207 1207 12 12 0.99% 0.99%
B 1207 1207 1 1 0.08% 0.08%
C 1207 1207 1 1 0.08% 0.08%
D 1207 1207 43 43 3.56% 3.56%

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 83 135714 4135.85 156 154 32.8
A 9 143 58156 1769.61 156 154 32.8
A 13 6 6861 204.63 156 154 32.8
B 0 199 12993 406.83 157 153 31.6
B 0 155 8768 272.97 157 153 31.6
B 0 230 8741 272.11 157 153 31.6
C 15 214 55536 1542.02 148 149 35.9
C 0 10 10205 279.97 148 149 35.9
C 14 254 6905 188.09 148 149 35.9
D 10 203 777890 21043.84 145 140 37.0
D 12 235 94853 2562.68 145 140 37.0
D 12 227 55578 1500.0 145 140 37.0

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