ASTROSAT CZTI

Data Quality Report

Orbit 54300

Creation date: 2025-10-11T18:46:57.988225
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_126T15_9000006516_54300cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54300cztM0_level2_quad_clean.evt
Size (bytes)533,652,48095,068,800
Size508.9 MB 90.7 MB
Events in quadrant A3,367,904651,084
Events in quadrant B3,547,409698,149
Events in quadrant C5,196,085546,394
Events in quadrant D7,125,612518,973

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148691
B0149311
C0203302
D0257801

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66591231.847124%
B6659711.066226%
C665878711.820366%
D665985212.794714%

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 7654 6660 70 70 0.91% 1.05%
B 7654 6660 24 24 0.31% 0.36%
C 7653 6659 729 729 9.53% 10.95%
D 7654 6660 936 936 12.23% 14.05%

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 0 8 237941 1354.26 710 693 175.2
A 8 246 104174 590.69 710 693 175.2
A 7 29 64579 364.67 710 693 175.2
B 7 0 376313 2503.49 697 671 150.0
B 10 247 110202 729.98 697 671 150.0
B 5 185 100156 663.02 697 671 150.0
C 1 241 1899960 10866.73 638 632 174.8
C 12 249 540849 3090.77 638 632 174.8
C 14 254 162923 928.52 638 632 174.8
D 8 176 2551692 13901.2 649 620 183.5
D 2 62 1364076 7429.69 649 620 183.5
D 2 172 257260 1398.47 649 620 183.5

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