ASTROSAT CZTI

Data Quality Report

Orbit 52129

Creation date: 2025-05-18T15:58:50.676812
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/AS1C09_011T07_9000006470_52129cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52129cztM0_level2_quad_clean.evt
Size (bytes)868,400,64078,969,600
Size828.2 MB 75.3 MB
Events in quadrant A3,508,181623,764
Events in quadrant B4,477,258631,641
Events in quadrant C8,448,855498,589
Events in quadrant D15,193,159170,535

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149231
B0178454
C0297416
D0497208

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6691911.360036%
B66904336.472347%
C6691149122.283665%
D6691498374.473173%

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 7471 6692 28 28 0.37% 0.42%
B 7472 6692 281 281 3.76% 4.20%
C 7472 6693 1197 1197 16.02% 17.88%
D 7472 6691 4691 4691 62.78% 70.11%

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 3 154722 884.91 705 687 174.1
A 5 240 129116 737.8 705 687 174.1
A 7 206 70005 398.22 705 687 174.1
B 5 172 721099 4969.97 678 654 145.0
B 5 185 327994 2258.14 678 654 145.0
B 12 32 227800 1566.96 678 654 145.0
C 15 224 3773267 22067.42 621 617 171.0
C 4 5 540702 3159.13 621 617 171.0
C 0 161 496690 2901.69 621 617 171.0
D 6 42 6132920 49302.31 432 412 124.4
D 15 94 5903905 47461.15 432 412 124.4
D 5 206 296515 2380.52 432 412 124.4

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