ASTROSAT CZTI

Data Quality Report

Orbit 40588

Creation date: 2024-06-27T22:17:54.469985
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_054T02_9000005550_40588cztM0_level2.fits modeM0/AS1A12_054T02_9000005550_40588cztM0_level2_quad_clean.evt
Size (bytes)295,211,52087,229,440
Size281.5 MB 83.2 MB
Events in quadrant A2,770,232591,709
Events in quadrant B2,447,251605,724
Events in quadrant C2,649,303578,093
Events in quadrant D2,640,975489,080

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115683
B0110882
C0113582
D0118252

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5377110.204575%
B5377200.371955%
C5377320.595127%
D53775079.429050%

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 7170 5378 4 4 0.06% 0.07%
B 7170 5378 11 11 0.15% 0.20%
C 7170 5378 27 27 0.38% 0.50%
D 7170 5378 34 34 0.47% 0.63%

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 486287 4031.37 584 572 120.5
A 12 189 13511 107.39 584 572 120.5
A 13 254 7075 53.97 584 572 120.5
B 0 190 99363 870.51 581 564 113.5
B 5 255 45670 397.42 581 564 113.5
B 12 111 14398 121.89 581 564 113.5
C 15 214 234019 1764.55 567 570 132.3
C 14 254 126596 952.58 567 570 132.3
C 0 10 68419 512.85 567 570 132.3
D 12 191 160713 1208.32 534 519 132.6
D 2 249 116912 877.93 534 519 132.6
D 13 249 112350 843.52 534 519 132.6

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