ASTROSAT CZTI

Data Quality Report

Orbit 33983

Creation date: 2024-06-27T20:55:01.662014
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/AS1A11_046T07_9000004862_33983cztM0_level2.evt modeM0/AS1A11_046T07_9000004862_33983cztM0_level2_quad_clean.evt
Size (bytes)2,008,578,240259,911,360
Size1.9 GB 247.9 MB
Events in quadrant A14,725,5781,604,490
Events in quadrant B12,502,2501,693,070
Events in quadrant C14,813,4221,620,700
Events in quadrant D17,422,0641,552,909

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0590
B0590
C0590
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0571816
B0506915
C0566765
D0660655

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04160
B04160
C04160
D04160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2032018539.119094%
B203205192.554134%
C2032013686.732283%
D2032012856.323819%

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 26226 20324 1607 1607 6.13% 7.91%
B 26226 20324 273 273 1.04% 1.34%
C 26226 20324 1060 1060 4.04% 5.22%
D 26226 20324 1063 1063 4.05% 5.23%

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 15 169 5656826 12220.67 2313 2266 462.7
A 14 238 52803 109.22 2313 2266 462.7
A 13 6 50450 104.14 2313 2266 462.7
B 5 172 1797274 4020.08 2353 2293 446.5
B 0 190 720985 1609.6 2353 2293 446.5
B 0 219 125700 276.39 2353 2293 446.5
C 9 187 3211465 6236.09 2253 2273 514.6
C 4 254 917456 1778.38 2253 2273 514.6
C 15 214 849801 1646.91 2253 2273 514.6
D 8 195 3762555 6739.89 2258 2189 557.9
D 12 6 1397982 2501.75 2258 2189 557.9
D 13 249 827055 1478.45 2258 2189 557.9

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