ASTROSAT CZTI

Data Quality Report

Orbit 51422

Creation date: 2025-04-01T00:06:01.287613
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/AS1A13_090T01_9000006458_51422cztM0_level2.fits modeM0/AS1A13_090T01_9000006458_51422cztM0_level2_quad_clean.evt
Size (bytes)562,553,28094,204,800
Size536.5 MB 89.8 MB
Events in quadrant A4,443,158643,375
Events in quadrant B4,004,325687,726
Events in quadrant C8,218,139494,752
Events in quadrant D3,663,639581,019

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174732
B0161563
C0287512
D0154122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63771872.932413%
B63762784.360100%
C6376165926.019448%
D63761592.493726%

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 7567 6378 92 92 1.22% 1.44%
B 7566 6376 96 96 1.27% 1.51%
C 7566 6377 1328 1328 17.55% 20.82%
D 7566 6377 87 87 1.15% 1.36%

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 12 3 537309 3036.29 728 711 176.7
A 12 250 305905 1726.91 728 711 176.7
A 5 240 164845 928.74 728 711 176.7
B 5 185 602787 3933.26 719 695 153.1
B 8 234 104599 678.77 719 695 153.1
B 0 213 86588 561.11 719 695 153.1
C 15 230 2092439 11988.73 637 632 174.5
C 15 179 1084362 6211.16 637 632 174.5
C 10 171 831086 4759.56 637 632 174.5
D 7 80 179923 926.89 701 676 193.4
D 11 176 143204 737.01 701 676 193.4
D 3 12 92384 474.22 701 676 193.4

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