ASTROSAT CZTI

Data Quality Report

Orbit 50360

Creation date: 2025-01-20T08:59:44.644317
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/AS1C09_003T01_9000006442_50360cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50360cztM0_level2_quad_clean.evt
Size (bytes)895,487,04079,539,840
Size854.0 MB 75.9 MB
Events in quadrant A5,506,403600,402
Events in quadrant B8,506,047564,929
Events in quadrant C10,331,191365,331
Events in quadrant D8,295,408417,508

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210092
B0298922
C0351752
D0291352

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65903024.582701%
B6591145722.105902%
C6591295344.803520%
D6591194429.494766%

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 7625 6591 225 225 2.95% 3.41%
B 7626 6592 999 999 13.10% 15.15%
C 7626 6592 2073 2073 27.18% 31.45%
D 7626 6592 1815 1815 23.80% 27.53%

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 4 3 797801 4554.74 697 680 175.0
A 7 206 632639 3611.01 697 680 175.0
A 10 253 258030 1470.5 697 680 175.0
B 4 170 3806257 26715.4 665 641 142.5
B 10 44 1001658 7027.13 665 641 142.5
B 4 206 298636 2091.92 665 641 142.5
C 15 230 5440381 35282.18 545 540 154.2
C 15 232 1088886 7058.89 545 540 154.2
C 0 208 285340 1847.18 545 540 154.2
D 7 61 4070651 24244.7 601 580 167.9
D 12 6 261212 1552.54 601 580 167.9
D 6 42 150815 894.92 601 580 167.9

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