ASTROSAT CZTI

Data Quality Report

Orbit 38644

Creation date: 2024-06-27T21:54:32.506571
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_38644cztM0_level2.fits modeM0/AS1A12_061T03_9000005390_38644cztM0_level2_quad_clean.evt
Size (bytes)1,012,870,080254,177,280
Size965.9 MB 242.4 MB
Events in quadrant A9,005,6321,683,758
Events in quadrant B8,279,2201,742,618
Events in quadrant C7,534,7631,692,221
Events in quadrant D11,476,0451,509,815

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03140
B03140
C03140
D03140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0510

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0362585
B0342134
C0318064
D0446864

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A154713081.990822%
B15471940.607588%
C15471260.168056%
D154717825.054618%

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 19710 15474 230 230 1.17% 1.49%
B 19710 15474 41 41 0.21% 0.26%
C 19710 15474 15 15 0.08% 0.10%
D 19710 15474 748 748 3.80% 4.83%

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 1087761 3098.63 1728 1693 350.5
A 9 143 867700 2470.78 1728 1693 350.5
A 15 174 87631 245.19 1728 1693 350.5
B 4 251 637627 1916.09 1741 1694 331.9
B 4 171 469242 1408.74 1741 1694 331.9
B 5 172 85463 252.4 1741 1694 331.9
C 15 214 614403 1535.74 1715 1728 398.9
C 3 110 105144 259.22 1715 1728 398.9
C 0 10 44204 106.47 1715 1728 398.9
D 2 249 1712525 4202.43 1675 1627 407.1
D 2 153 921672 2259.88 1675 1627 407.1
D 2 250 599065 1467.47 1675 1627 407.1

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