ASTROSAT CZTI

Data Quality Report

Orbit 31884

Creation date: 2024-06-27T20:33:58.447552
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/AS1T04_043T01_9000004648_31884cztM0_level2.evt modeM0/AS1T04_043T01_9000004648_31884cztM0_level2_quad_clean.evt
Size (bytes)563,653,44069,045,120
Size537.5 MB 65.8 MB
Events in quadrant A3,395,579416,790
Events in quadrant B5,165,084416,913
Events in quadrant C3,579,025402,047
Events in quadrant D4,477,991388,867

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140244
B0202852
C0144812
D0178045

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6682681.017659%
B66821412.110147%
C66821852.768632%
D66801442.155689%

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 7682 6683 1 1 0.01% 0.01%
B 7682 6683 5 5 0.07% 0.07%
C 7682 6683 3 3 0.04% 0.04%
D 7682 6683 77 77 1.00% 1.15%

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 15 174 15284 83.4 871 856 173.0
A 13 6 13250 71.64 871 856 173.0
A 13 254 11059 58.98 871 856 173.0
B 6 159 1737643 10514.49 862 840 165.2
B 12 111 20421 118.54 862 840 165.2
B 11 111 18834 108.93 862 840 165.2
C 14 238 147611 760.21 827 833 193.1
C 0 10 88134 452.16 827 833 193.1
C 3 233 59827 305.55 827 833 193.1
D 8 195 1034992 5260.05 828 806 196.6
D 13 249 196120 993.4 828 806 196.6
D 2 250 99627 502.62 828 806 196.6

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