ASTROSAT CZTI

Data Quality Report

Orbit 51016

Creation date: 2025-03-04T15:08:59.397033
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/AS1C07_001T02_9000006452_51016cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_51016cztM0_level2_quad_clean.evt
Size (bytes)565,588,80089,265,600
Size539.4 MB 85.1 MB
Events in quadrant A8,105,989531,579
Events in quadrant B3,685,913657,732
Events in quadrant C4,687,021537,080
Events in quadrant D3,973,788540,864

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284041
B0153031
C0182331
D0163301

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6235121219.438653%
B62351883.015237%
C623565210.457097%
D62362383.816549%

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 7360 6236 1165 1165 15.83% 18.68%
B 7360 6236 53 53 0.72% 0.85%
C 7359 6235 529 529 7.19% 8.48%
D 7361 6237 169 169 2.30% 2.71%

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 80 4035587 25390.92 644 629 158.9
A 12 3 731071 4596.48 644 629 158.9
A 5 240 124432 779.06 644 629 158.9
B 4 171 234982 1679.44 656 633 139.5
B 4 206 158380 1130.48 656 633 139.5
B 4 81 147311 1051.15 656 633 139.5
C 15 1 768200 4536.24 606 600 169.2
C 15 147 336915 1987.5 606 600 169.2
C 13 3 243191 1433.63 606 600 169.2
D 2 216 498141 2741.68 638 614 181.5
D 7 39 278390 1530.72 638 614 181.5
D 8 176 175290 962.57 638 614 181.5

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