ASTROSAT CZTI

Data Quality Report

Orbit 41882

Creation date: 2024-06-27T22:33:59.390313
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/AS1T05_124T01_9000005712_41882cztM0_level2.fits modeM0/AS1T05_124T01_9000005712_41882cztM0_level2_quad_clean.evt
Size (bytes)421,908,48081,313,920
Size402.4 MB 77.5 MB
Events in quadrant A5,080,271509,789
Events in quadrant B2,340,521597,749
Events in quadrant C3,110,937525,203
Events in quadrant D4,692,466474,807

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183942
B0102982
C0122432
D0173502

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A505772914.415661%
B505780.158197%
C50572815.556654%
D505755711.014435%

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 7180 5058 627 627 8.73% 12.40%
B 7180 5058 2 2 0.03% 0.04%
C 7180 5058 279 279 3.89% 5.52%
D 7180 5058 485 485 6.75% 9.59%

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 14 24 2422197 21279.97 553 542 113.8
A 10 83 507074 4451.08 553 542 113.8
A 7 3 6974 56.52 553 542 113.8
B 0 156 54411 481.48 568 551 111.9
B 0 245 50691 448.22 568 551 111.9
B 12 111 13953 119.8 568 551 111.9
C 0 10 837685 6707.11 529 530 124.8
C 15 214 197788 1580.39 529 530 124.8
C 0 15 8031 60.1 529 530 124.8
D 12 79 1089993 8191.93 534 518 133.0
D 13 249 660197 4960.23 534 518 133.0
D 5 222 559336 4201.84 534 518 133.0

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