ASTROSAT CZTI

Data Quality Report

Orbit 36596

Creation date: 2024-06-27T21:28:55.906160
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_097T24_9000005224_36596cztM0_level2.evt modeM0/AS1A11_097T24_9000005224_36596cztM0_level2_quad_clean.evt
Size (bytes)415,270,08049,939,200
Size396.0 MB 47.6 MB
Events in quadrant A2,797,215298,486
Events in quadrant B2,694,770298,044
Events in quadrant C3,318,317283,231
Events in quadrant D3,416,693271,411

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112793
B0110062
C0127012
D0135102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5147470.913153%
B5147280.544006%
C51472324.507480%
D51471152.234311%

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 7210 5148 31 31 0.43% 0.60%
B 7210 5148 8 8 0.11% 0.16%
C 7210 5148 174 174 2.41% 3.38%
D 7210 5148 87 87 1.21% 1.69%

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 10 83 191584 1500.9 633 623 127.2
A 15 223 141112 1104.21 633 623 127.2
A 9 143 12307 91.83 633 623 127.2
B 15 85 79582 658.43 625 609 119.9
B 0 190 54232 447.08 625 609 119.9
B 5 255 37884 310.78 625 609 119.9
C 0 10 697321 5051.45 594 599 137.9
C 15 214 217884 1575.38 594 599 137.9
C 0 207 66137 475.17 594 599 137.9
D 2 153 173507 1174.94 606 590 147.2
D 2 250 165861 1122.98 606 590 147.2
D 7 223 146704 992.82 606 590 147.2

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