ASTROSAT CZTI

Data Quality Report

Orbit 38959

Creation date: 2024-06-27T21:58:39.415366
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/AS1T05_064T01_9000005416_38959cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38959cztM0_level2_quad_clean.evt
Size (bytes)466,793,280103,841,280
Size445.2 MB 99.0 MB
Events in quadrant A3,688,235701,677
Events in quadrant B3,094,889718,197
Events in quadrant C4,298,190670,553
Events in quadrant D5,703,172609,021

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149203
B0135072
C0168192
D0214282

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6368701.099246%
B6368510.800879%
C63683475.449121%
D63685468.574121%

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 9293 6370 60 60 0.65% 0.94%
B 9293 6370 35 35 0.38% 0.55%
C 9293 6370 305 305 3.28% 4.79%
D 9293 6369 525 525 5.65% 8.24%

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 478817 3351.84 705 691 142.6
A 6 10 195795 1367.75 705 691 142.6
A 13 248 191624 1338.51 705 691 142.6
B 5 172 254830 1881.55 703 684 135.1
B 0 230 46010 335.57 703 684 135.1
B 5 184 19254 137.48 703 684 135.1
C 14 254 1371260 8675.4 676 680 158.0
C 15 214 260627 1645.39 676 680 158.0
C 0 207 8832 51.6 676 680 158.0
D 12 227 1632757 10034.98 670 651 162.6
D 12 235 763044 4687.56 670 651 162.6
D 2 249 282955 1735.74 670 651 162.6

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