ASTROSAT CZTI

Data Quality Report

Orbit 57565

Creation date: 2026-05-19T13:27:51.529030
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_113T09_9000006574_57565cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57565cztM0_level2_quad_clean.evt
Size (bytes)413,467,20095,883,840
Size394.3 MB 91.4 MB
Events in quadrant A2,848,922631,325
Events in quadrant B3,125,761673,809
Events in quadrant C4,613,791586,358
Events in quadrant D4,213,138560,282

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131681
B0138031
C0181801
D0168581

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6472410.633498%
B64731081.668469%
C64733064.727329%
D64731812.796230%

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 7487 6473 1 1 0.01% 0.02%
B 7488 6474 44 44 0.59% 0.68%
C 7488 6474 211 211 2.82% 3.26%
D 7488 6474 146 146 1.95% 2.26%

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 10 251 40790 228.15 709 690 175.8
A 3 128 36116 201.56 709 690 175.8
A 4 3 8964 47.07 709 690 175.8
B 5 185 132436 875.53 700 674 150.5
B 4 206 71925 473.45 700 674 150.5
B 10 247 32211 209.56 700 674 150.5
C 15 224 977408 5274.33 683 676 185.2
C 12 254 562051 3031.41 683 676 185.2
C 14 254 154313 829.64 683 676 185.2
D 15 142 535374 2758.55 685 653 193.8
D 7 96 494684 2548.63 685 653 193.8
D 15 94 91376 468.03 685 653 193.8

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