ASTROSAT CZTI

Data Quality Report

Orbit 53542

Creation date: 2025-08-21T17:45:25.563786
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_004T05_9000006502_53542cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53542cztM0_level2_quad_clean.evt
Size (bytes)634,455,36077,849,280
Size605.1 MB 74.2 MB
Events in quadrant A7,527,251414,350
Events in quadrant B3,125,006635,784
Events in quadrant C8,239,119382,873
Events in quadrant D4,145,072519,894

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263176
B0130141
C0283991
D0161641

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5788196733.984105%
B57881452.505183%
C5789200434.617378%
D57893235.579547%

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 6947 5787 1616 1616 23.26% 27.92%
B 6948 5788 35 35 0.50% 0.60%
C 6948 5788 1922 1922 27.66% 33.21%
D 6949 5789 249 249 3.58% 4.30%

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 63 3782911 27138.18 560 545 139.4
A 15 174 754440 5409.14 560 545 139.4
A 12 115 522208 3742.89 560 545 139.4
B 8 128 180857 1302.17 648 627 138.4
B 10 28 53860 384.61 648 627 138.4
B 0 213 52731 376.45 648 627 138.4
C 1 241 4188096 30071.6 506 501 139.3
C 15 224 1604386 11517.68 506 501 139.3
C 5 10 253288 1815.29 506 501 139.3
D 2 153 368858 2016.75 634 605 182.6
D 2 120 243511 1330.28 634 605 182.6
D 7 70 146602 799.56 634 605 182.6

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