ASTROSAT CZTI

Data Quality Report

Orbit 55448

Creation date: 2025-12-28T00:34:54.647302
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_099T01_9000006536_55448cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55448cztM0_level2_quad_clean.evt
Size (bytes)450,339,84098,363,520
Size429.5 MB 93.8 MB
Events in quadrant A3,713,473652,601
Events in quadrant B3,383,061692,811
Events in quadrant C3,190,977621,250
Events in quadrant D5,854,535539,103

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160612
B0152482
C0148342
D0220632

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67861912.814618%
B67862343.448276%
C67851201.768607%
D678576911.333825%

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 7706 6787 104 104 1.35% 1.53%
B 7706 6787 129 129 1.67% 1.90%
C 7705 6786 71 71 0.92% 1.05%
D 7705 6786 630 630 8.18% 9.28%

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 3 78 524324 2906.99 727 711 180.1
A 0 8 324211 1796.01 727 711 180.1
A 4 3 15033 79.51 727 711 180.1
B 0 171 361009 2343.34 715 687 153.8
B 10 247 89740 579.15 715 687 153.8
B 7 252 44597 285.57 715 687 153.8
C 13 3 277106 1407.37 714 705 196.4
C 10 64 51164 256.93 714 705 196.4
C 12 252 25821 127.88 714 705 196.4
D 2 62 1325835 7046.23 676 648 188.1
D 3 12 303426 1609.92 676 648 188.1
D 11 129 298610 1584.31 676 648 188.1

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