ASTROSAT CZTI

Data Quality Report

Orbit 31152

Creation date: 2024-06-27T20:24:09.378871
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/AS1C06_002T01_9000004500_31152cztM0_level2.evt modeM0/AS1C06_002T01_9000004500_31152cztM0_level2_quad_clean.evt
Size (bytes)668,407,680106,695,360
Size637.4 MB 101.8 MB
Events in quadrant A3,068,568740,586
Events in quadrant B5,358,579723,918
Events in quadrant C3,487,994719,120
Events in quadrant D7,904,359609,617

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131232
B0203652
C0143362
D0278492

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6273280.446357%
B62741572.502391%
C62742503.984699%
D6274132721.150781%

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 7433 6274 0 0 0.00% 0.00%
B 7434 6275 6 6 0.08% 0.10%
C 7434 6275 25 25 0.34% 0.40%
D 7434 6275 865 865 11.64% 13.78%

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 12733 75.91 794 779 157.5
A 3 137 7229 40.96 794 779 157.5
A 0 226 6856 38.59 794 779 157.5
B 6 159 1993922 13585.38 786 766 146.7
B 0 190 117124 793.1 786 766 146.7
B 0 230 40967 274.01 786 766 146.7
C 14 238 149066 831.66 771 776 178.3
C 0 10 128074 713.93 771 776 178.3
C 3 233 97285 541.26 771 776 178.3
D 8 195 2339668 13017.98 707 692 179.7
D 13 174 2158188 12007.93 707 692 179.7
D 2 250 413876 2299.65 707 692 179.7

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