ASTROSAT CZTI

Data Quality Report

Orbit 54191

Creation date: 2025-10-08T15:46:13.669407
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_012T01_9000006512_54191cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54191cztM0_level2_quad_clean.evt
Size (bytes)426,709,44087,056,640
Size406.9 MB 83.0 MB
Events in quadrant A4,814,814531,509
Events in quadrant B3,475,077619,667
Events in quadrant C3,504,103541,639
Events in quadrant D3,520,834511,551

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187200
B0148950
C0151670
D0151780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A617864210.391713%
B61781101.780511%
C61792473.997411%
D61791732.799806%

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 6178 6178 400 400 6.47% 6.47%
B 6178 6178 49 49 0.79% 0.79%
C 6179 6179 193 193 3.12% 3.12%
D 6179 6179 155 155 2.51% 2.51%

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 7 29 1154656 7553.44 616 600 152.8
A 4 5 536189 3505.5 616 600 152.8
A 15 174 199622 1302.62 616 600 152.8
B 15 20 330756 2360.74 646 622 139.8
B 4 171 167621 1194.18 646 622 139.8
B 5 236 125032 889.64 646 622 139.8
C 1 241 459581 2672.77 629 625 171.7
C 12 2 152665 885.42 629 625 171.7
C 15 215 129260 749.12 629 625 171.7
D 8 176 549184 3079.24 628 600 178.2
D 3 12 193534 1082.95 628 600 178.2
D 14 52 55878 310.28 628 600 178.2

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