ASTROSAT CZTI

Data Quality Report

Orbit 35913

Creation date: 2022-06-09T00:55:38.319508
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/AS1A11_080T01_9000005146_35913cztM0_level2.evt modeM0/AS1A11_080T01_9000005146_35913cztM0_level2_quad_clean.evt
Size (bytes)482,063,04069,062,400
Size459.7 MB 65.9 MB
Events in quadrant A3,101,983456,773
Events in quadrant B4,059,972414,122
Events in quadrant C3,186,658435,131
Events in quadrant D3,897,900420,398

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122753
B0151982
C0124522
D0152682

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5204210.403536%
B52045099.780938%
C5204891.710223%
D52041623.112990%

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 7297 5205 5 5 0.07% 0.10%
B 7297 5205 348 348 4.77% 6.69%
C 7297 5205 75 75 1.03% 1.44%
D 7297 5205 129 129 1.77% 2.48%

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 15 169 231879 1676.43 689 678 137.9
A 10 83 161595 1166.8 689 678 137.9
A 9 143 38662 275.42 689 678 137.9
B 5 172 1412197 11816.86 639 626 119.5
B 5 255 106015 882.25 639 626 119.5
B 12 111 13780 110.11 639 626 119.5
C 0 10 254180 1721.01 644 652 147.3
C 15 214 221851 1501.56 644 652 147.3
C 0 207 195908 1325.45 644 652 147.3
D 8 195 367457 2342.46 650 634 156.6
D 1 52 303037 1931.09 650 634 156.6
D 13 249 206063 1311.83 650 634 156.6

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