ASTROSAT CZTI

Data Quality Report

Orbit 28864

Creation date: 2024-06-27T19:57:20.270090
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_123T06_9000004138_28864cztM0_level2.evt modeM0/AS1A10_123T06_9000004138_28864cztM0_level2_quad_clean.evt
Size (bytes)1,922,852,160219,012,480
Size1.8 GB 208.9 MB
Events in quadrant A8,481,6101,470,008
Events in quadrant B8,409,6811,515,972
Events in quadrant C8,222,7381,434,789
Events in quadrant D32,052,9361,117,014

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0348133
B0346603
C0340593
D01059673

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15847930.586862%
B158472531.596517%
C158482711.709995%
D158481065467.226148%

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 19752 15849 6 6 0.03% 0.04%
B 19752 15848 73 73 0.37% 0.46%
C 19753 15849 14 14 0.07% 0.09%
D 19753 15848 11618 11618 58.82% 73.31%

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 14 235 583350 1458.89 2034 1998 398.5
A 1 113 35141 83.17 2034 1998 398.5
A 13 254 28162 65.66 2034 1998 398.5
B 5 255 329385 877.94 2016 1975 372.9
B 15 32 89597 234.96 2016 1975 372.9
B 10 246 57115 147.86 2016 1975 372.9
C 14 238 343720 772.08 1931 1950 442.7
C 3 233 210714 471.61 1931 1950 442.7
C 4 254 81878 180.56 1931 1950 442.7
D 8 195 21177309 58037.02 1572 1535 364.9
D 1 52 4389921 12027.37 1572 1535 364.9
D 7 80 415071 1133.39 1572 1535 364.9

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