ASTROSAT CZTI

Data Quality Report

Orbit 55372

Creation date: 2025-12-22T22:03:06.052856
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_55372cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55372cztM0_level2_quad_clean.evt
Size (bytes)535,688,64093,997,440
Size510.9 MB 89.6 MB
Events in quadrant A7,592,514553,596
Events in quadrant B3,286,595683,622
Events in quadrant C4,330,497599,954
Events in quadrant D4,116,625556,494

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270131
B0144471
C0174851
D0168141

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6485112717.378566%
B6485961.480339%
C64852323.577487%
D64853906.013878%

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 7615 6485 876 876 11.50% 13.51%
B 7615 6486 21 21 0.28% 0.32%
C 7615 6486 177 177 2.32% 2.73%
D 7615 6486 343 343 4.50% 5.29%

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 4 159 3365941 20455.3 666 651 164.5
A 12 115 1236808 7513.75 666 651 164.5
A 0 8 113740 687.39 666 651 164.5
B 0 199 248563 1682.22 688 663 147.4
B 5 185 167353 1131.14 688 663 147.4
B 4 81 59057 396.25 688 663 147.4
C 9 38 951195 5159.17 671 666 184.2
C 13 3 607073 3291.39 671 666 184.2
C 12 250 106706 575.55 671 666 184.2
D 11 176 861690 4551.17 672 644 189.2
D 2 249 121425 638.4 672 644 189.2
D 10 181 112668 592.12 672 644 189.2

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