ASTROSAT CZTI

Data Quality Report

Orbit 21960

Creation date: 2024-06-27T18:34:32.464476
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/AS1A07_007T02_9000003244_21960cztM0_level2.evt modeM0/AS1A07_007T02_9000003244_21960cztM0_level2_quad_clean.evt
Size (bytes)154,454,40043,413,120
Size147.3 MB 41.4 MB
Events in quadrant A1,020,715296,074
Events in quadrant B1,103,439301,662
Events in quadrant C1,046,177292,226
Events in quadrant D1,370,896280,937

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042140
B045020
C042330
D054910

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A196940.203149%
B1970110.558376%
C1970100.507614%
D1970311.573604%

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 1969 1969 0 0 0.00% 0.00%
B 1970 1970 6 6 0.30% 0.30%
C 1970 1970 0 0 0.00% 0.00%
D 1970 1970 35 35 1.78% 1.78%

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 2 79 16645 303.91 260 255 53.9
A 13 254 3401 58.33 260 255 53.9
A 0 226 2186 35.8 260 255 53.9
B 3 64 68838 1373.56 257 251 49.9
B 0 197 21837 432.29 257 251 49.9
B 0 230 7114 137.44 257 251 49.9
C 14 238 40787 666.47 256 258 60.8
C 9 54 4912 76.53 256 258 60.8
C 10 22 2248 32.72 256 258 60.8
D 1 52 235543 3716.31 259 252 63.3
D 13 174 150615 2374.92 259 252 63.3
D 2 234 7985 122.14 259 252 63.3

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