ASTROSAT CZTI

Data Quality Report

Orbit 17764

Creation date: 2024-06-27T17:40:37.568881
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/AS1A05_015T01_9000002650_17764cztM0_level2.evt modeM0/AS1A05_015T01_9000002650_17764cztM0_level2_quad_clean.evt
Size (bytes)129,476,16032,175,360
Size123.5 MB 30.7 MB
Events in quadrant A931,159210,633
Events in quadrant B962,498218,363
Events in quadrant C943,375207,439
Events in quadrant D958,278205,125

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0404
B0404
C0404
D0406

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04257220
B04290211
C04251220
D04345227

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A181226914.845475%
B181927214.953271%
C181525013.774105%
D181422412.348401%

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 1949 1893 0 0 0.00% 0.00%
B 1949 1896 0 0 0.00% 0.00%
C 1949 1893 0 0 0.00% 0.00%
D 1949 1890 4 4 0.21% 0.21%

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 0 226 2114 35.84 242 235 52.4
A 3 137 1976 33.21 242 235 52.4
A 12 194 1937 32.46 242 235 52.4
B 0 189 20633 410.01 239 230 49.8
B 12 111 5851 112.96 239 230 49.8
B 0 219 5798 111.89 239 230 49.8
C 14 238 33482 604.51 228 227 55.0
C 5 218 15691 281.1 228 227 55.0
C 13 61 1640 25.69 228 227 55.0
D 2 152 23922 401.95 236 228 58.9
D 2 120 16215 271.21 236 228 58.9
D 10 70 10023 166.17 236 228 58.9

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