ASTROSAT CZTI

Data Quality Report

Orbit 54646

Creation date: 2025-11-04T02:04:53.724192
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_066T07_9000006522_54646cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54646cztM0_level2_quad_clean.evt
Size (bytes)443,004,48098,539,200
Size422.5 MB 94.0 MB
Events in quadrant A3,212,022662,493
Events in quadrant B3,430,896704,106
Events in quadrant C5,720,106573,282
Events in quadrant D3,536,295595,852

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139652
B0144882
C0213402
D0149782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64201231.915888%
B64201852.881620%
C641969910.889547%
D64191181.838293%

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 6421 32 32 0.42% 0.50%
B 7545 6421 57 57 0.76% 0.89%
C 7544 6420 432 432 5.73% 6.73%
D 7544 6420 44 44 0.58% 0.69%

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 11 3 164536 893.83 752 733 183.3
A 5 240 41361 221.7 752 733 183.3
A 4 3 21125 111.27 752 733 183.3
B 10 247 378331 2392.99 739 714 157.8
B 7 0 42955 267.68 739 714 157.8
B 0 245 19080 116.39 739 714 157.8
C 9 38 2278581 11788.38 704 698 193.2
C 6 223 166792 859.56 704 698 193.2
C 12 252 156954 808.65 704 698 193.2
D 6 239 212515 1032.28 734 703 205.2
D 15 94 141883 688.05 734 703 205.2
D 2 249 91917 444.54 734 703 205.2

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