ASTROSAT CZTI

Data Quality Report

Orbit 33935

Creation date: 2024-06-27T20:54:32.818091
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/AS1T04_088T01_9000004846_33935cztM0_level2.evt modeM0/AS1T04_088T01_9000004846_33935cztM0_level2_quad_clean.evt
Size (bytes)260,386,56028,209,600
Size248.3 MB 26.9 MB
Events in quadrant A2,734,010147,007
Events in quadrant B1,579,945181,489
Events in quadrant C1,266,175187,090
Events in quadrant D2,153,488177,521

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A114047022184324046
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A096461
B062301
C050401
D079581

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A222059126.621622%
B22201607.207207%
C2220532.387387%
D22201366.126126%

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 2219 2219 492 492 22.17% 22.17%
B 2220 2220 104 104 4.68% 4.68%
C 2220 2220 35 35 1.58% 1.58%
D 2220 2220 86 86 3.87% 3.87%

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 1889492 42002.33 213 208 45.0
A 13 6 7358 158.96 213 208 45.0
A 10 83 6095 130.88 213 208 45.0
B 5 172 383877 8087.33 243 237 47.4
B 0 229 136039 2862.78 243 237 47.4
B 0 190 27940 583.99 243 237 47.4
C 0 10 174343 3006.44 245 246 57.9
C 15 214 96271 1658.24 245 246 57.9
C 14 67 28165 482.13 245 246 57.9
D 8 195 645848 9990.54 240 234 64.6
D 13 249 207862 3212.94 240 234 64.6
D 2 250 112250 1733.39 240 234 64.6

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