ASTROSAT CZTI

Data Quality Report

Orbit 50541

Creation date: 2025-01-31T16:30:57.618174
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_239T01_9000006444_50541cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50541cztM0_level2_quad_clean.evt
Size (bytes)950,207,04092,272,320
Size906.2 MB 88.0 MB
Events in quadrant A6,222,237644,660
Events in quadrant B4,440,084736,910
Events in quadrant C11,991,446448,571
Events in quadrant D11,945,744445,597

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0235230
B0182540
C0408390
D0406665

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74426598.855146%
B74422032.727761%
C7442275537.019618%
D7441241132.401559%

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 7442 7442 389 389 5.23% 5.23%
B 7442 7442 135 135 1.81% 1.81%
C 7442 7442 2370 2370 31.85% 31.85%
D 7440 7440 2316 2316 31.13% 31.13%

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 12 250 2104574 11028.77 764 745 190.8
A 4 3 207037 1081.43 764 745 190.8
A 3 130 127957 666.88 764 745 190.8
B 4 170 340334 2074.01 771 745 163.7
B 0 229 228185 1389.07 771 745 163.7
B 5 172 197525 1201.82 771 745 163.7
C 15 157 1754089 9510.87 651 644 184.4
C 15 196 1460591 7918.9 651 644 184.4
C 4 12 1383780 7502.27 651 644 184.4
D 7 61 2859316 15851.38 649 628 180.3
D 6 42 2856767 15837.25 649 628 180.3
D 14 67 829646 4596.89 649 628 180.3

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