ASTROSAT CZTI

Data Quality Report

Orbit 54967

Creation date: 2025-11-25T17:05:15.981089
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_014T01_9000006528_54967cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54967cztM0_level2_quad_clean.evt
Size (bytes)655,608,96088,891,200
Size625.2 MB 84.8 MB
Events in quadrant A3,658,570623,800
Events in quadrant B3,142,524703,061
Events in quadrant C4,249,416610,024
Events in quadrant D12,703,174292,347

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157242
B0141202
C0173932
D0424053

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66293134.721677%
B66291011.523608%
C66292643.982501%
D6628341651.538926%

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 7704 6630 140 140 1.82% 2.11%
B 7704 6630 4 4 0.05% 0.06%
C 7704 6630 167 167 2.17% 2.52%
D 7703 6629 3425 3425 44.46% 51.67%

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 15 32 672961 3847.08 714 696 174.7
A 13 248 119064 677.37 714 696 174.7
A 4 3 35572 199.58 714 696 174.7
B 5 172 199336 1273.35 723 698 156.0
B 5 185 48801 308.36 723 698 156.0
B 12 111 18772 115.86 723 698 156.0
C 4 5 1293672 6684.5 705 699 193.4
C 14 254 50870 259.38 705 699 193.4
C 6 223 41924 213.13 705 699 193.4
D 15 94 10261857 75806.11 476 455 135.4
D 2 249 141034 1038.53 476 455 135.4
D 6 239 100646 740.16 476 455 135.4

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