ASTROSAT CZTI

Data Quality Report

Orbit 33718

Creation date: 2024-06-27T20:51:47.564054
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/AS1A11_086T01_9000004816_33718cztM0_level2.evt modeM0/AS1A11_086T01_9000004816_33718cztM0_level2_quad_clean.evt
Size (bytes)117,532,80018,048,960
Size112.1 MB 17.2 MB
Events in quadrant A873,813113,099
Events in quadrant B738,122112,162
Events in quadrant C765,581112,699
Events in quadrant D1,081,240101,107

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05624
B05725
C05628
D05727

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01310
B01414
C01311
D01313

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076564062
B060552918
C063443209
D0109966789

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14281107.703081%
B147580.542373%
C146740.272665%
D13541128.271787%

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 4021 1549 77 77 1.91% 4.97%
B 4021 1624 2 2 0.05% 0.12%
C 4021 1634 0 0 0.00% 0.00%
D 4021 1463 91 91 2.26% 6.22%

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 15 169 243713 7255.34 157 154 33.6
A 15 237 16937 499.95 157 154 33.6
A 13 6 3807 108.82 157 154 33.6
B 5 172 39088 1115.66 168 164 34.9
B 0 213 16959 481.39 168 164 34.9
B 0 229 6349 177.28 168 164 34.9
C 15 214 68121 1713.66 163 164 39.7
C 9 54 30504 765.08 163 164 39.7
C 0 10 10746 266.84 163 164 39.7
D 2 250 244573 6037.88 143 139 40.5
D 8 195 147138 3631.09 143 139 40.5
D 1 52 59572 1468.07 143 139 40.5

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