ASTROSAT CZTI

Data Quality Report

Orbit 30479

Creation date: 2024-06-27T20:15:47.428385
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_058T04_9000004382_30479cztM0_level2.evt modeM0/AS1A10_058T04_9000004382_30479cztM0_level2_quad_clean.evt
Size (bytes)177,151,68011,269,440
Size168.9 MB 10.7 MB
Events in quadrant A973,58553,813
Events in quadrant B1,514,72353,372
Events in quadrant C1,354,64850,253
Events in quadrant D1,393,40047,020

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A039441
B056831
C054501
D054251

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1860291.559140%
B1860583.118280%
C18601126.021505%
D18601216.505376%

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 2805 1860 0 0 0.00% 0.00%
B 2805 1860 0 0 0.00% 0.00%
C 2805 1860 13 13 0.46% 0.70%
D 2805 1860 106 106 3.78% 5.70%

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 8 192 10263 194.72 249 244 51.5
A 13 254 3114 55.78 249 244 51.5
A 3 137 2382 41.55 249 244 51.5
B 6 159 520579 10510.3 248 241 49.5
B 0 229 11772 232.91 248 241 49.5
B 12 111 6038 117.09 248 241 49.5
C 3 233 334535 5719.19 239 240 58.5
C 0 10 42393 721.16 239 240 58.5
C 14 238 38783 659.4 239 240 58.5
D 7 238 207460 3599.09 238 232 57.6
D 12 218 100569 1742.63 238 232 57.6
D 12 227 63321 1095.71 238 232 57.6

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