ASTROSAT CZTI

Data Quality Report

Orbit 41484

Creation date: 2024-06-27T22:29:39.692771
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/AS1A12_035T02_9000005676_41484cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41484cztM0_level2_quad_clean.evt
Size (bytes)381,283,20089,236,800
Size363.6 MB 85.1 MB
Events in quadrant A3,069,373615,492
Events in quadrant B2,821,945607,873
Events in quadrant C3,180,736567,784
Events in quadrant D4,611,199523,244

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125123
B0122362
C0128792
D0174672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5533290.524128%
B55331172.114585%
C55332304.156877%
D55334618.331827%

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 7147 5534 12 12 0.17% 0.22%
B 7147 5534 77 77 1.08% 1.39%
C 7147 5534 228 228 3.19% 4.12%
D 7146 5533 428 428 5.99% 7.74%

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 10 83 551399 4364.34 614 601 126.2
A 13 248 74612 586.44 614 601 126.2
A 2 79 63140 495.54 614 601 126.2
B 0 186 365462 3117.95 603 586 117.0
B 0 190 34799 292.36 603 586 117.0
B 0 245 34466 289.51 603 586 117.0
C 0 10 638356 4725.11 574 576 135.0
C 15 214 227993 1684.86 574 576 135.0
C 3 233 27145 196.84 574 576 135.0
D 12 16 1225460 8812.32 576 560 139.0
D 5 222 456446 3279.79 576 560 139.0
D 1 47 216197 1551.36 576 560 139.0

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