ASTROSAT CZTI

Data Quality Report

Orbit 57896

Creation date: 2026-06-10T18:43:02.447427
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/AS1A14_125T11_9000006582_57896cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57896cztM0_level2_quad_clean.evt
Size (bytes)1,424,315,520248,702,400
Size1.3 GB 237.2 MB
Events in quadrant A9,415,9471,704,937
Events in quadrant B9,913,7851,761,622
Events in quadrant C13,207,9241,578,012
Events in quadrant D18,749,2281,206,288

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0414683
B0429153
C0521553
D0687163

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A185565062.726881%
B185579285.000808%
C1855712636.806057%
D18557388520.935496%

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 19596 18560 78 78 0.40% 0.42%
B 19597 18561 396 396 2.02% 2.13%
C 19597 18561 791 791 4.04% 4.26%
D 19597 18561 3314 3314 16.91% 17.85%

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 7 64 1316186 2675.26 1999 1949 491.3
A 4 236 258628 522.49 1999 1949 491.3
A 3 14 62671 123.61 1999 1949 491.3
B 2 249 1004669 2400.98 1944 1864 417.7
B 10 247 315260 750.35 1944 1864 417.7
B 5 172 309406 736.34 1944 1864 417.7
C 15 224 3849542 7473.17 1906 1888 514.9
C 2 12 915076 1773.66 1906 1888 514.9
C 12 252 395945 765.36 1906 1888 514.9
D 12 110 9612269 18589.17 1846 1769 517.0
D 2 153 594894 1147.26 1846 1769 517.0
D 8 160 363883 700.42 1846 1769 517.0

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