ASTROSAT CZTI

Data Quality Report

Orbit 28704

Creation date: 2024-06-27T19:55:10.130730
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_021T08_9000004118_28704cztM0_level2.evt modeM0/AS1A10_021T08_9000004118_28704cztM0_level2_quad_clean.evt
Size (bytes)604,512,00095,736,960
Size576.5 MB 91.3 MB
Events in quadrant A3,491,411637,027
Events in quadrant B3,583,393644,949
Events in quadrant C3,594,791617,673
Events in quadrant D7,214,466562,732

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139052
B0143512
C0143582
D0259972

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62601221.948882%
B62601312.092652%
C62602263.610224%
D6260135421.629393%

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 7555 6260 0 0 0.00% 0.00%
B 7555 6260 1 1 0.01% 0.02%
C 7555 6260 4 4 0.05% 0.06%
D 7555 6260 1249 1249 16.53% 19.95%

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 11810 61.03 902 887 179.0
A 14 239 8113 40.38 902 887 179.0
A 3 137 7871 39.02 902 887 179.0
B 10 245 97670 588.59 878 858 164.5
B 15 33 28706 169.31 878 858 164.5
B 12 111 19449 113.03 878 858 164.5
C 14 238 160692 811.31 857 867 197.0
C 10 22 51325 256.14 857 867 197.0
C 14 254 29917 147.47 857 867 197.0
D 1 52 3811477 20328.98 794 774 187.5
D 8 195 254171 1351.8 794 774 187.5
D 12 79 52008 273.32 794 774 187.5

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