ASTROSAT CZTI

Data Quality Report

Orbit 37408

Creation date: 2024-06-27T21:39:38.087513
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/AS1A09_002T01_9000005322_37408cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37408cztM0_level2_quad_clean.evt
Size (bytes)545,388,48089,726,400
Size520.1 MB 85.6 MB
Events in quadrant A3,472,336570,745
Events in quadrant B2,567,053612,948
Events in quadrant C3,083,574610,639
Events in quadrant D7,032,794548,620

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135983
B0112152
C0123622
D0246542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53343566.674166%
B5334320.599925%
C53341402.624672%
D533461411.511061%

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 7067 5335 314 314 4.44% 5.89%
B 7067 5335 27 27 0.38% 0.51%
C 7067 5335 109 109 1.54% 2.04%
D 7067 5335 611 611 8.65% 11.45%

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 15 222 867985 7386.47 580 569 117.4
A 10 83 274600 2333.51 580 569 117.4
A 5 168 23199 192.71 580 569 117.4
B 5 172 122320 1070.15 596 581 113.8
B 5 255 46385 402.64 596 581 113.8
B 5 184 20865 178.31 596 581 113.8
C 14 254 473694 3499.05 584 589 135.2
C 15 214 228190 1683.32 584 589 135.2
C 0 10 71058 521.18 584 589 135.2
D 12 227 3700528 26073.21 575 558 141.9
D 10 199 212879 1496.2 575 558 141.9
D 13 249 181532 1275.3 575 558 141.9

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