ASTROSAT CZTI

Data Quality Report

Orbit 38927

Creation date: 2024-06-27T21:58:15.595472
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_064T01_9000005416_38927cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38927cztM0_level2_quad_clean.evt
Size (bytes)313,289,28087,203,520
Size298.8 MB 83.2 MB
Events in quadrant A2,617,851586,696
Events in quadrant B2,393,567608,378
Events in quadrant C2,554,148584,633
Events in quadrant D3,644,410513,314

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109142
B0103421
C0106351
D0142161

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4962130.261991%
B4962110.221685%
C4962360.725514%
D49623507.053607%

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 7085 4963 10 10 0.14% 0.20%
B 7085 4963 6 6 0.08% 0.12%
C 7085 4963 31 31 0.44% 0.62%
D 7085 4963 329 329 4.64% 6.63%

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 393807 3572.0 546 534 110.1
A 13 248 82300 742.66 546 534 110.1
A 13 6 10770 92.97 546 534 110.1
B 0 230 50957 484.41 551 537 104.1
B 5 172 35276 333.75 551 537 104.1
B 0 190 31390 296.42 551 537 104.1
C 15 214 205109 1623.77 545 548 126.0
C 12 249 124915 987.21 545 548 126.0
C 0 10 57112 449.0 545 548 126.0
D 2 250 1147807 9115.68 524 511 125.9
D 12 6 128172 1014.31 524 511 125.9
D 2 153 85945 678.8 524 511 125.9

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