ASTROSAT CZTI

Data Quality Report

Orbit 10662

Creation date: 2024-06-27T16:02:40.105988
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/AS1G07_076T01_9000001538_10662cztM0_level2.evt modeM0/AS1G07_076T01_9000001538_10662cztM0_level2_quad_clean.evt
Size (bytes)1,271,995,200193,795,200
Size1.2 GB 184.8 MB
Events in quadrant A8,882,1291,165,238
Events in quadrant B10,496,2711,194,794
Events in quadrant C7,811,0941,210,771
Events in quadrant D10,209,4351,151,243

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0379022
B0421292
C0350012
D0415112

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03360
B03360
C03360
D03360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A166237164.307285%
B166239725.847320%
C166232791.678397%
D166232951.774650%

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 17029 16625 281 281 1.65% 1.69%
B 17029 16626 418 418 2.45% 2.51%
C 17029 16626 68 68 0.40% 0.41%
D 17029 16626 62 62 0.36% 0.37%

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 15 223 744612 1913.32 1890 1843 388.2
A 15 174 357655 916.55 1890 1843 388.2
A 15 239 319079 817.18 1890 1843 388.2
B 4 239 2395027 6634.69 1894 1843 360.7
B 15 204 391270 1079.62 1894 1843 360.7
B 0 214 93510 254.13 1894 1843 360.7
C 4 254 439254 1015.59 1863 1872 430.7
C 14 234 58606 131.74 1863 1872 430.7
C 4 175 15528 31.71 1863 1872 430.7
D 1 20 2239274 5000.97 1851 1796 447.4
D 8 195 257192 570.83 1851 1796 447.4
D 13 249 228011 505.61 1851 1796 447.4

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