ASTROSAT CZTI

Data Quality Report

Orbit 39489

Creation date: 2024-06-27T22:05:13.655409
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_001T02_9000005486_39489cztM0_level2.fits modeM0/AS1C07_001T02_9000005486_39489cztM0_level2_quad_clean.evt
Size (bytes)364,210,56088,116,480
Size347.3 MB 84.0 MB
Events in quadrant A3,824,129589,532
Events in quadrant B3,174,936592,590
Events in quadrant C2,907,597599,849
Events in quadrant D3,191,840540,463

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146623
B0128062
C0119492
D0129162

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49271633.308301%
B49272905.885935%
C4927420.852446%
D49271402.841486%

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 6930 4928 132 132 1.90% 2.68%
B 6930 4928 212 212 3.06% 4.30%
C 6930 4928 28 28 0.40% 0.57%
D 6930 4928 116 116 1.67% 2.35%

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 15 174 583915 5298.92 548 539 110.1
A 6 10 446823 4053.69 548 539 110.1
A 10 83 405423 3677.64 548 539 110.1
B 5 172 754559 7317.27 539 526 103.0
B 5 255 288783 2797.3 539 526 103.0
B 12 111 12254 113.81 539 526 103.0
C 15 208 367509 2907.56 549 554 126.2
C 15 214 209321 1654.16 549 554 126.2
C 9 187 165009 1303.05 549 554 126.2
D 12 0 470988 3604.3 541 527 130.5
D 2 249 238391 1822.32 541 527 130.5
D 12 227 183675 1403.13 541 527 130.5

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