ASTROSAT CZTI

Data Quality Report

Orbit 22769

Creation date: 2024-06-27T18:45:27.548237
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/AS1C05_001T01_9000003366_22769cztM0_level2.evt modeM0/AS1C05_001T01_9000003366_22769cztM0_level2_quad_clean.evt
Size (bytes)508,343,040146,992,320
Size484.8 MB 140.2 MB
Events in quadrant A3,370,5221,032,811
Events in quadrant B3,516,7691,040,517
Events in quadrant C3,358,973986,097
Events in quadrant D4,721,694953,207

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139831
B0144251
C0140481
D0183021

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62961081.715375%
B62961272.017154%
C62971432.270923%
D62973225.113546%

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 7621 6297 0 0 0.00% 0.00%
B 7621 6297 6 6 0.08% 0.10%
C 7622 6298 0 0 0.00% 0.00%
D 7622 6298 177 177 2.32% 2.81%

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 13 254 11544 62.65 873 859 170.6
A 0 226 7777 40.56 873 859 170.6
A 12 194 6226 31.47 873 859 170.6
B 0 228 45161 283.8 861 841 156.2
B 0 230 41138 258.04 861 841 156.2
B 0 190 28209 175.25 861 841 156.2
C 14 238 134915 719.8 822 828 186.3
C 10 22 9677 47.5 822 828 186.3
C 0 10 8158 39.35 822 828 186.3
D 1 52 1176922 5893.01 836 812 199.6
D 12 233 142263 708.75 836 812 199.6
D 2 152 71178 352.58 836 812 199.6

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