ASTROSAT CZTI

Data Quality Report

Orbit 19107

Creation date: 2024-06-27T17:59:07.307783
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/AS1T03_098T01_9000002836_19107cztM0_level2.evt modeM0/AS1T03_098T01_9000002836_19107cztM0_level2_quad_clean.evt
Size (bytes)474,779,520107,268,480
Size452.8 MB 102.3 MB
Events in quadrant A3,084,700704,040
Events in quadrant B3,392,751729,420
Events in quadrant C3,218,697711,439
Events in quadrant D4,261,309670,765

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132102
B0140792
C0134832
D0169882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6207290.467214%
B62071101.772193%
C6207901.449976%
D62071852.980506%

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 7512 6208 1 1 0.01% 0.02%
B 7512 6208 39 39 0.52% 0.63%
C 7512 6208 4 4 0.05% 0.06%
D 7512 6208 110 110 1.46% 1.77%

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 4 2 38692 237.23 789 775 159.8
A 0 226 6733 37.28 789 775 159.8
A 11 47 6037 32.92 789 775 159.8
B 3 112 135256 905.78 796 778 148.5
B 7 220 67155 447.08 796 778 148.5
B 4 216 32819 215.81 796 778 148.5
C 14 238 122035 675.24 774 782 179.6
C 3 233 54023 296.49 774 782 179.6
C 0 207 26413 142.73 774 782 179.6
D 12 218 529996 2807.22 764 741 188.5
D 11 176 313579 1659.33 764 741 188.5
D 1 52 286796 1517.27 764 741 188.5

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