ASTROSAT CZTI

Data Quality Report

Orbit 57548

Creation date: 2026-05-18T08:24:17.522338
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_113T09_9000006574_57548cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57548cztM0_level2_quad_clean.evt
Size (bytes)496,584,00088,269,120
Size473.6 MB 84.2 MB
Events in quadrant A3,312,235580,493
Events in quadrant B3,549,252612,486
Events in quadrant C5,392,276501,413
Events in quadrant D5,580,365487,285

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149132
B0155252
C0208712
D0214662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7048660.936436%
B70481121.589103%
C70486118.669126%
D70486469.165721%

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 8841 7331 21 21 0.24% 0.29%
B 8841 7331 21 21 0.24% 0.29%
C 8841 7327 460 460 5.20% 6.28%
D 8841 7332 624 624 7.06% 8.51%

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 10 251 171723 908.92 760 742 188.1
A 4 249 112934 596.4 760 742 188.1
A 3 14 43581 227.73 760 742 188.1
B 4 142 153352 936.66 753 725 162.9
B 4 206 111095 677.33 753 725 162.9
B 9 251 69364 421.23 753 725 162.9
C 15 224 1341816 6979.53 711 703 192.1
C 12 254 1101802 5730.43 711 703 192.1
C 12 252 68646 353.59 711 703 192.1
D 15 142 1674063 8435.02 708 677 198.4
D 2 31 406555 2045.91 708 677 198.4
D 15 94 264486 1329.78 708 677 198.4

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