ASTROSAT CZTI

Data Quality Report

Orbit 55273

Creation date: 2025-12-16T06:05:03.469017
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_009T01_9000006534_55273cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55273cztM0_level2_quad_clean.evt
Size (bytes)427,343,04094,006,080
Size407.5 MB 89.7 MB
Events in quadrant A4,063,625602,505
Events in quadrant B2,952,633661,798
Events in quadrant C4,195,835577,682
Events in quadrant D4,104,081553,106

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01342
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01685613
B0136989
C01706918
D01693331

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64652083.217324%
B6467600.927787%
C64633044.703698%
D64621442.228412%

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 7545 6471 211 211 2.80% 3.26%
B 7545 6471 15 15 0.20% 0.23%
C 7545 6471 247 247 3.27% 3.82%
D 7545 6471 127 127 1.68% 1.96%

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 12 115 893328 5417.33 669 655 164.8
A 0 8 208416 1260.83 669 655 164.8
A 7 7 183624 1110.38 669 655 164.8
B 0 199 98302 669.47 674 650 145.9
B 10 189 48202 326.0 674 650 145.9
B 10 247 38220 257.57 674 650 145.9
C 10 22 693666 3845.08 656 650 180.2
C 13 3 357421 1979.48 656 650 180.2
C 15 147 213145 1178.99 656 650 180.2
D 11 129 1018660 5507.1 654 626 184.9
D 7 70 167303 901.65 654 626 184.9
D 6 239 86147 462.63 654 626 184.9

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