ASTROSAT CZTI

Data Quality Report

Orbit 37158

Creation date: 2024-06-27T21:36:19.811508
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_079T01_9000005284_37158cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37158cztM0_level2_quad_clean.evt
Size (bytes)427,331,52077,253,120
Size407.5 MB 73.7 MB
Events in quadrant A2,866,763515,171
Events in quadrant B2,923,707514,657
Events in quadrant C2,807,333501,332
Events in quadrant D4,004,371457,234

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114573
B0115832
C0111132
D0149392

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4994200.400481%
B4994831.661994%
C4994250.500601%
D49943797.589107%

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 7027 4995 11 11 0.16% 0.22%
B 7027 4995 55 55 0.78% 1.10%
C 7027 4995 22 22 0.31% 0.44%
D 7027 4995 394 394 5.61% 7.89%

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 251271 1928.12 656 645 130.0
A 13 248 67909 517.48 656 645 130.0
A 13 254 7780 54.89 656 645 130.0
B 5 172 365316 3030.9 639 626 120.3
B 4 232 17162 137.43 639 626 120.3
B 12 111 14674 116.75 639 626 120.3
C 15 214 228195 1567.83 623 628 145.1
C 0 10 132367 907.62 623 628 145.1
C 14 254 13187 86.53 623 628 145.1
D 2 249 1333636 8974.24 617 603 148.5
D 12 235 89405 597.83 617 603 148.5
D 13 249 53853 358.49 617 603 148.5

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