ASTROSAT CZTI

Data Quality Report

Orbit 11015

Creation date: 2024-06-27T16:07:04.737815
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/AS1G08_046T09_9000001600_11015cztM0_level2.evt modeM0/AS1G08_046T09_9000001600_11015cztM0_level2_quad_clean.evt
Size (bytes)145,010,88027,103,680
Size138.3 MB 25.8 MB
Events in quadrant A1,445,556172,342
Events in quadrant B857,948192,820
Events in quadrant C702,514190,031
Events in quadrant D1,292,300164,907

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A052232
B033946
C029133
D0472913

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A134128321.103654%
B1339896.646751%
C1340463.432836%
D133922316.654220%

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 2621 1341 160 160 6.10% 11.93%
B 2621 1341 13 13 0.50% 0.97%
C 2621 1342 3 3 0.11% 0.22%
D 2621 1341 165 165 6.30% 12.30%

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 8 5 519436 14690.68 166 163 35.3
A 14 238 281215 7951.2 166 163 35.3
A 14 254 2716 72.23 166 163 35.3
B 4 239 135844 3678.09 181 177 36.9
B 0 187 9605 255.6 181 177 36.9
B 11 51 4151 107.74 181 177 36.9
C 14 234 17987 425.23 175 175 41.9
C 13 61 1266 26.05 175 175 41.9
C 12 4 706 12.68 175 175 41.9
D 10 253 408641 10047.99 163 158 40.7
D 11 129 127279 3126.96 163 158 40.7
D 1 52 107980 2652.24 163 158 40.7

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