ASTROSAT CZTI

Data Quality Report

Orbit 38630

Creation date: 2024-06-27T21:54:21.904993
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_061T03_9000005390_38630cztM0_level2.fits modeM0/AS1A12_061T03_9000005390_38630cztM0_level2_quad_clean.evt
Size (bytes)412,145,28094,420,800
Size393.1 MB 90.0 MB
Events in quadrant A3,063,770650,854
Events in quadrant B3,816,170647,571
Events in quadrant C2,831,061638,299
Events in quadrant D5,099,017520,801

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126933
B0152582
C0118852
D0190542

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5736340.592748%
B57362314.027197%
C5736170.296374%
D573676813.389121%

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 8723 5738 17 17 0.19% 0.30%
B 8723 5738 156 156 1.79% 2.72%
C 8723 5738 9 9 0.10% 0.16%
D 8723 5738 705 705 8.08% 12.29%

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 435043 3250.35 653 640 133.6
A 9 143 45652 336.8 653 640 133.6
A 13 248 24651 179.66 653 640 133.6
B 0 183 843986 6674.01 645 627 126.4
B 5 184 245159 1935.13 645 627 126.4
B 4 171 54760 428.39 645 627 126.4
C 15 214 230414 1523.01 642 647 150.9
C 14 254 43294 282.69 642 647 150.9
C 0 10 28899 187.27 642 647 150.9
D 2 249 1002230 6751.28 600 583 148.4
D 12 227 666792 4490.37 600 583 148.4
D 13 249 198862 1336.44 600 583 148.4

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