ASTROSAT CZTI

Data Quality Report

Orbit 54434

Creation date: 2025-10-20T19:32:31.685585
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_126T19_9000006518_54434cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54434cztM0_level2_quad_clean.evt
Size (bytes)663,402,240100,774,080
Size632.7 MB 96.1 MB
Events in quadrant A3,314,227719,009
Events in quadrant B3,574,417768,681
Events in quadrant C4,464,133671,324
Events in quadrant D12,599,812351,434

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156860
B0163030
C0183260
D0428110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A777460.077180%
B7775230.295820%
C77751231.581994%
D7775374748.192926%

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 7774 7774 0 0 0.00% 0.00%
B 7775 7775 18 18 0.23% 0.23%
C 7775 7775 94 94 1.21% 1.21%
D 7774 7772 2884 2884 37.10% 37.11%

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 11 3 45232 221.05 811 791 201.0
A 8 246 41768 203.82 811 791 201.0
A 7 206 34352 166.93 811 791 201.0
B 0 213 103618 608.27 797 771 169.1
B 10 247 88259 517.44 797 771 169.1
B 5 185 72891 426.54 797 771 169.1
C 11 244 537792 2556.44 769 759 210.1
C 4 5 377331 1792.59 769 759 210.1
C 1 16 223005 1057.96 769 759 210.1
D 8 176 7076782 46219.81 537 513 153.1
D 7 70 2627443 17158.22 537 513 153.1
D 3 12 475830 3104.61 537 513 153.1

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