ASTROSAT CZTI

Data Quality Report

Orbit 54134

Creation date: 2025-09-30T17:11:08.416641
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_012T01_9000006512_54134cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54134cztM0_level2_quad_clean.evt
Size (bytes)516,467,52092,088,000
Size492.5 MB 87.8 MB
Events in quadrant A3,424,986610,207
Events in quadrant B3,244,507667,183
Events in quadrant C3,098,919593,870
Events in quadrant D8,836,034456,051

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147081
B0142251
C0145211
D0308921

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66101241.875946%
B6610671.013616%
C6611991.497504%
D6611148022.386931%

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 7445 6610 75 75 1.01% 1.13%
B 7445 6610 13 13 0.17% 0.20%
C 7446 6612 83 83 1.11% 1.26%
D 7446 6611 1495 1495 20.08% 22.61%

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 14 284694 1667.75 687 672 170.3
A 15 174 217471 1273.02 687 672 170.3
A 7 158 68084 395.84 687 672 170.3
B 5 236 198354 1336.17 683 659 148.0
B 15 20 102110 685.68 683 659 148.0
B 0 197 46057 306.83 683 659 148.0
C 13 3 186130 1017.1 663 656 182.4
C 1 241 148320 809.76 663 656 182.4
C 12 252 35684 192.09 663 656 182.4
D 7 70 4190608 23778.11 616 587 176.2
D 8 176 1567990 8894.92 616 587 176.2
D 12 128 186253 1053.64 616 587 176.2

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