ASTROSAT CZTI

Data Quality Report

Orbit 51572

Creation date: 2025-04-11T03:23:37.296043
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/AS1A13_037T05_9000006460_51572cztM0_level2.fits modeM0/AS1A13_037T05_9000006460_51572cztM0_level2_quad_clean.evt
Size (bytes)1,092,392,64088,462,080
Size1.0 GB 84.4 MB
Events in quadrant A12,722,248494,574
Events in quadrant B4,207,423797,810
Events in quadrant C14,603,973243,691
Events in quadrant D8,301,251600,184

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0432280
B0178820
C0486390
D0300611

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7791298238.274933%
B77911331.707098%
C7792531368.185318%
D779199612.783982%

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 7791 7791 2335 2335 29.97% 29.97%
B 7791 7791 69 69 0.89% 0.89%
C 7792 7790 4256 4256 54.62% 54.63%
D 7791 7791 1003 1003 12.87% 12.87%

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 2992143 16967.56 713 700 176.3
A 12 3 2945355 16702.18 713 700 176.3
A 12 250 1747639 9908.7 713 700 176.3
B 8 128 182078 1007.94 836 807 179.8
B 0 171 138607 766.23 836 807 179.8
B 7 252 92728 511.12 836 807 179.8
C 15 198 12272792 91547.91 478 472 134.1
C 0 177 141518 1052.16 478 472 134.1
C 13 3 121435 902.35 478 472 134.1
D 8 176 3688396 16782.74 774 747 219.7
D 12 6 621085 2823.2 774 747 219.7
D 3 12 247921 1124.91 774 747 219.7

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