ASTROSAT CZTI

Data Quality Report

Orbit 13951

Creation date: 2024-06-27T16:48:22.504983
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/AS1A04_225T01_9000002062_13951cztM0_level2.evt modeM0/AS1A04_225T01_9000002062_13951cztM0_level2_quad_clean.evt
Size (bytes)163,632,96027,048,960
Size156.1 MB 25.8 MB
Events in quadrant A1,079,642169,555
Events in quadrant B1,160,521175,355
Events in quadrant C1,151,779171,012
Events in quadrant D1,430,249161,900

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A044272
B046911
C047501
D056271

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1934251.292658%
B1934472.430196%
C1934140.723888%
D1934281.447777%

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 3205 1936 1 1 0.03% 0.05%
B 3205 1936 8 8 0.25% 0.41%
C 3205 1936 1 1 0.03% 0.05%
D 3205 1936 11 11 0.34% 0.57%

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 1 162 9156 156.99 273 268 56.6
A 9 143 5040 84.29 273 268 56.6
A 1 178 3276 53.13 273 268 56.6
B 0 219 40060 754.94 274 269 52.7
B 0 190 12424 230.61 274 269 52.7
B 0 189 10223 188.85 274 269 52.7
C 3 233 126123 2048.66 262 264 61.4
C 13 61 1957 27.56 262 264 61.4
C 0 207 1237 15.84 262 264 61.4
D 13 122 163633 2373.67 259 253 68.8
D 1 52 97116 1407.27 259 253 68.8
D 8 195 70537 1021.12 259 253 68.8

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