ASTROSAT CZTI

Data Quality Report

Orbit 51311

Creation date: 2025-03-24T12:26:43.318084
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/AS1C07_001T03_9000006456_51311cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51311cztM0_level2_quad_clean.evt
Size (bytes)957,697,92094,032,000
Size913.3 MB 89.7 MB
Events in quadrant A7,020,752681,975
Events in quadrant B4,642,288739,993
Events in quadrant C14,415,838332,257
Events in quadrant D8,786,017564,014

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263060
B0192450
C0479460
D0315560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75961301.711427%
B75972653.488219%
C7597424255.837831%
D7597113214.900619%

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 7596 7596 123 123 1.62% 1.62%
B 7597 7597 173 173 2.28% 2.28%
C 7597 7597 3899 3899 51.32% 51.32%
D 7597 7597 1220 1220 16.06% 16.06%

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 3 3025021 16034.31 759 740 188.6
A 12 194 344450 1822.3 759 740 188.6
A 9 191 253187 1338.44 759 740 188.6
B 5 172 626334 3813.58 760 732 164.0
B 5 185 307250 1868.49 760 732 164.0
B 7 252 215348 1308.27 760 732 164.0
C 4 12 10651088 76971.39 493 489 138.4
C 14 242 461206 3329.58 493 489 138.4
C 15 206 281507 2030.9 493 489 138.4
D 8 176 3645198 18406.2 708 683 198.0
D 12 2 701728 3540.54 708 683 198.0
D 6 42 328697 1656.59 708 683 198.0

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