ASTROSAT CZTI

Data Quality Report

Orbit 29889

Creation date: 2024-06-27T20:08:46.833700
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_102T12_9000004284_29889cztM0_level2.evt modeM0/AS1A10_102T12_9000004284_29889cztM0_level2_quad_clean.evt
Size (bytes)616,034,88068,630,400
Size587.5 MB 65.5 MB
Events in quadrant A3,645,258419,529
Events in quadrant B5,423,759416,380
Events in quadrant C4,702,641398,119
Events in quadrant D4,448,966393,565

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149702
B0203922
C0184772
D0177572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64591011.563710%
B64591572.430717%
C64592523.901533%
D64591963.034525%

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 7679 6460 3 3 0.04% 0.05%
B 7679 6460 1 1 0.01% 0.02%
C 7679 6460 44 44 0.57% 0.68%
D 7679 6460 106 106 1.38% 1.64%

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 25557 133.72 939 925 184.2
A 13 254 11151 55.51 939 925 184.2
A 3 137 8462 40.92 939 925 184.2
B 6 159 1739978 10116.27 915 893 171.9
B 0 229 87342 502.87 915 893 171.9
B 12 111 20511 114.12 915 893 171.9
C 3 233 737656 3612.81 882 892 203.9
C 10 22 372773 1823.56 882 892 203.9
C 14 238 145296 708.1 882 892 203.9
D 7 80 461490 2205.1 898 878 208.9
D 8 195 388222 1854.34 898 878 208.9
D 7 238 89876 426.06 898 878 208.9

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