ASTROSAT CZTI

Data Quality Report

Orbit 50536

Creation date: 2025-01-31T07:29:50.922175
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_50536cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50536cztM0_level2_quad_clean.evt
Size (bytes)604,284,48095,927,040
Size576.3 MB 91.5 MB
Events in quadrant A4,093,983638,825
Events in quadrant B4,555,587690,844
Events in quadrant C7,520,653562,213
Events in quadrant D5,694,482558,756

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163611
B0180031
C0268131
D0215291

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65091492.289138%
B65092924.486096%
C651094414.500768%
D65104957.603687%

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 7724 6510 97 97 1.26% 1.49%
B 7724 6510 115 115 1.49% 1.77%
C 7725 6511 689 689 8.92% 10.58%
D 7725 6511 487 487 6.30% 7.48%

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 8 247 238593 1350.41 711 695 176.2
A 12 250 196589 1111.98 711 695 176.2
A 4 3 188597 1066.61 711 695 176.2
B 4 170 1070994 7242.77 702 680 147.8
B 7 0 281179 1898.13 702 680 147.8
B 0 229 84503 567.23 702 680 147.8
C 15 174 1860568 10004.6 668 663 185.9
C 15 196 482030 2589.32 668 663 185.9
C 15 212 377866 2029.01 668 663 185.9
D 8 246 1623191 8553.35 673 649 189.7
D 2 249 355071 1868.36 673 649 189.7
D 12 128 297171 1563.14 673 649 189.7

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