ASTROSAT CZTI

Data Quality Report

Orbit 01236

Creation date: 2024-06-27T14:09:36.132904
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/AS1G04_011T02_9000000226_01236cztM0_level2.evt modeM0/AS1G04_011T02_9000000226_01236cztM0_level2_quad_clean.evt
Size (bytes)1,453,291,20089,400,960
Size1.4 GB 85.3 MB
Events in quadrant A8,247,582650,692
Events in quadrant B19,194,675329,014
Events in quadrant C8,081,920634,957
Events in quadrant D8,045,712622,422

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0292722
B0626321
C0287581
D0287101

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6711500.745045%
B6711530178.989718%
C6711100.149009%
D67111241.847713%

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 6916 6712 342 342 4.95% 5.10%
B 6916 6712 6055 6055 87.55% 90.21%
C 6916 6712 238 238 3.44% 3.55%
D 6916 6712 424 424 6.13% 6.32%

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 12 133 71162 137.93 2087 2103 500.7
A 0 51 62477 120.58 2087 2103 500.7
A 12 243 47001 89.67 2087 2103 500.7
B 2 32 13501632 43807.15 1293 1299 308.2
B 8 4 402682 1302.45 1293 1299 308.2
B 0 244 174551 562.18 1293 1299 308.2
C 15 241 366130 667.39 1947 2013 545.6
C 3 79 40510 70.56 1947 2013 545.6
C 3 111 30862 52.88 1947 2013 545.6
D 10 84 891814 1509.91 1890 1956 589.3
D 13 70 52521 85.8 1890 1956 589.3
D 1 239 27678 43.64 1890 1956 589.3

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