ASTROSAT CZTI

Data Quality Report

Orbit 51379

Creation date: 2025-03-29T02:21:59.072907
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_001T03_9000006456_51379cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51379cztM0_level2_quad_clean.evt
Size (bytes)350,268,48029,252,160
Size334.0 MB 27.9 MB
Events in quadrant A3,275,515192,486
Events in quadrant B1,585,891256,046
Events in quadrant C4,860,70964,000
Events in quadrant D3,055,582200,058

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0597
B0587
C0609
D0597

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131231694
B075791124
C0195443455
D0130982354

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131
B0131
C0131
D0131

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A241251621.393035%
B24251164.783505%
C2393179775.094024%
D239534214.279749%

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 4496 2427 384 384 8.54% 15.82%
B 4510 2442 39 39 0.86% 1.60%
C 4507 2398 1742 1742 38.65% 72.64%
D 4492 2418 400 400 8.90% 16.54%

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 996241 16610.47 236 229 60.0
A 15 174 542827 9048.9 236 229 60.0
A 4 175 490261 8172.25 236 229 60.0
B 4 81 138091 2411.36 262 252 57.2
B 0 172 119905 2093.22 262 252 57.2
B 8 128 99612 1738.21 262 252 57.2
C 15 179 2427318 74407.91 114 112 32.6
C 4 12 974868 29881.9 114 112 32.6
C 7 220 818566 25090.34 114 112 32.6
D 8 176 766238 11054.72 243 234 69.3
D 11 176 733797 10586.54 243 234 69.3
D 7 60 259695 3744.46 243 234 69.3

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