ASTROSAT CZTI

Data Quality Report

Orbit 21653

Creation date: 2024-06-27T18:30:41.687683
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/AS1A06_002T02_9000003206_21653cztM0_level2.evt modeM0/AS1A06_002T02_9000003206_21653cztM0_level2_quad_clean.evt
Size (bytes)456,145,92095,964,480
Size435.0 MB 91.5 MB
Events in quadrant A3,139,735632,092
Events in quadrant B3,228,102659,113
Events in quadrant C3,108,501615,862
Events in quadrant D3,924,213573,666

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131532
B0133852
C0129962
D0156952

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6094250.410240%
B6094350.574335%
C6094711.165080%
D60941502.461437%

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 7429 6095 1 1 0.01% 0.02%
B 7429 6095 0 0 0.00% 0.00%
C 7429 6095 0 0 0.00% 0.00%
D 7429 6095 114 114 1.53% 1.87%

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 15 236 84376 534.8 788 774 156.3
A 4 2 11809 70.59 788 774 156.3
A 15 174 9845 58.03 788 774 156.3
B 0 230 31000 203.98 796 778 148.2
B 4 216 19388 125.61 796 778 148.2
B 0 189 18499 119.61 796 778 148.2
C 14 238 121800 687.04 761 769 176.2
C 10 22 11197 59.19 761 769 176.2
C 9 54 5229 25.32 761 769 176.2
D 1 52 610460 3383.54 747 726 180.2
D 7 238 175094 967.61 747 726 180.2
D 9 68 144376 797.14 747 726 180.2

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