ASTROSAT CZTI

Data Quality Report

Orbit 37859

Creation date: 2024-06-27T21:45:24.576435
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/AS1C07_001T12_9000005352_37859cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37859cztM0_level2_quad_clean.evt
Size (bytes)487,944,00086,181,120
Size465.3 MB 82.2 MB
Events in quadrant A2,917,308569,547
Events in quadrant B3,308,139563,543
Events in quadrant C3,022,321556,622
Events in quadrant D5,129,510507,778

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124563
B0139352
C0124332
D0193232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5895150.254453%
B58951692.866836%
C5895270.458015%
D589560210.212044%

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 7207 5896 10 10 0.14% 0.17%
B 7207 5896 106 106 1.47% 1.80%
C 7207 5896 26 26 0.36% 0.44%
D 7207 5896 500 500 6.94% 8.48%

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 10 83 370118 2823.48 647 633 130.9
A 9 143 20923 155.05 647 633 130.9
A 13 6 15353 112.49 647 633 130.9
B 5 172 565229 4611.21 637 619 122.4
B 0 229 66420 537.4 637 619 122.4
B 4 81 57351 463.33 637 619 122.4
C 15 214 247568 1674.9 631 634 147.4
C 14 67 157401 1063.32 631 634 147.4
C 0 10 128067 864.35 631 634 147.4
D 2 249 893686 6007.0 609 590 148.7
D 1 52 546628 3672.67 609 590 148.7
D 1 47 339226 2277.68 609 590 148.7

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