ASTROSAT CZTI

Data Quality Report

Orbit 17500

Creation date: 2024-06-27T17:37:19.297333
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/AS1T03_068T01_9000002594_17500cztM0_level2.evt modeM0/AS1T03_068T01_9000002594_17500cztM0_level2_quad_clean.evt
Size (bytes)95,209,92029,557,440
Size90.8 MB 28.2 MB
Events in quadrant A716,249203,558
Events in quadrant B692,984206,250
Events in quadrant C700,190194,999
Events in quadrant D682,790192,576

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A028311
B027681
C027941
D027681

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1296110.848765%
B1296161.234568%
C1296100.771605%
D129610.077160%

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 1296 1296 0 0 0.00% 0.00%
B 1296 1296 0 0 0.00% 0.00%
C 1296 1296 0 0 0.00% 0.00%
D 1296 1296 0 0 0.00% 0.00%

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 13 210 16334 418.79 182 179 38.6
A 0 226 1600 36.84 182 179 38.6
A 12 194 1327 29.76 182 179 38.6
B 12 111 3779 101.69 177 173 35.5
B 11 111 3353 89.67 177 173 35.5
B 14 111 2923 77.55 177 173 35.5
C 14 238 26907 661.76 168 169 40.4
C 5 218 10212 248.56 168 169 40.4
C 3 233 3041 71.08 168 169 40.4
D 13 189 12278 281.58 174 169 43.0
D 2 234 4263 95.2 174 169 43.0
D 3 238 2868 62.76 174 169 43.0

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