ASTROSAT CZTI

Data Quality Report

Orbit 41904

Creation date: 2024-06-27T22:34:12.748514
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_099T01_9000005716_41904cztM0_level2.fits modeM0/AS1A12_099T01_9000005716_41904cztM0_level2_quad_clean.evt
Size (bytes)499,089,60082,972,800
Size476.0 MB 79.1 MB
Events in quadrant A3,585,332590,019
Events in quadrant B2,551,153620,652
Events in quadrant C3,270,727560,384
Events in quadrant D8,630,504348,220

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142253
B0116822
C0132832
D0295372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56161713.044872%
B5616400.712251%
C56162544.522792%
D5616215638.390313%

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 7227 5617 114 114 1.58% 2.03%
B 7227 5617 29 29 0.40% 0.52%
C 7227 5617 255 255 3.53% 4.54%
D 7227 5617 2108 2108 29.17% 37.53%

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 753666 6146.3 593 581 122.5
A 10 83 532225 4339.01 593 581 122.5
A 13 6 7920 59.9 593 581 122.5
B 5 255 171138 1457.23 601 585 117.0
B 12 111 15236 125.18 601 585 117.0
B 11 111 14080 115.3 601 585 117.0
C 0 10 783940 5787.91 573 576 135.3
C 15 214 220577 1625.48 573 576 135.3
C 0 15 17629 126.0 573 576 135.3
D 12 79 6187610 55027.2 455 441 112.4
D 5 222 296638 2634.31 455 441 112.4
D 12 6 159406 1413.8 455 441 112.4

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