ASTROSAT CZTI

Data Quality Report

Orbit 35400

Creation date: 2022-09-12T17:57:10.783063
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/AS1T05_022T01_9000005070_35400cztM0_level2.evt modeM0/AS1T05_022T01_9000005070_35400cztM0_level2_quad_clean.evt
Size (bytes)381,372,48031,697,280
Size363.7 MB 30.2 MB
Events in quadrant A1,310,296228,132
Events in quadrant B4,967,565163,055
Events in quadrant C1,553,369226,224
Events in quadrant D3,549,328162,866

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053412
B0164541
C060171
D0122601

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A248450.201288%
B2484164866.344605%
C2484813.260870%
D248499440.016103%

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 3947 2485 0 0 0.00% 0.00%
B 3947 2485 1355 1355 34.33% 54.53%
C 3947 2485 48 48 1.22% 1.93%
D 3947 2485 721 721 18.27% 29.01%

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 63161 973.77 309 303 64.6
A 9 143 40998 630.43 309 303 64.6
A 13 6 9206 137.92 309 303 64.6
B 4 251 1816050 43567.06 204 199 41.7
B 5 14 759468 18216.87 204 199 41.7
B 5 31 725708 17406.88 204 199 41.7
C 0 10 207749 2965.86 294 296 69.9
C 15 214 102580 1462.31 294 296 69.9
C 3 233 62432 888.33 294 296 69.9
D 7 80 2159385 36349.81 234 226 59.4
D 2 250 130121 2186.8 234 226 59.4
D 2 152 97284 1633.99 234 226 59.4

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