ASTROSAT CZTI

Data Quality Report

Orbit 08721

Creation date: 2024-06-27T15:36:16.465206
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/AS1A02_132T01_9000001212_08721cztM0_level2.evt modeM0/AS1A02_132T01_9000001212_08721cztM0_level2_quad_clean.evt
Size (bytes)725,875,200125,593,920
Size692.2 MB 119.8 MB
Events in quadrant A5,006,005762,073
Events in quadrant B4,952,112786,143
Events in quadrant C4,819,168779,912
Events in quadrant D6,470,023723,966

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221924
B0220049
C0220071
D02669221

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108551040.958084%
B10852990.912274%
C10856790.727708%
D108535615.169078%

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 11181 10856 10 10 0.09% 0.09%
B 11181 10856 0 0 0.00% 0.00%
C 11181 10856 2 2 0.02% 0.02%
D 11181 10855 471 471 4.21% 4.34%

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 13 251 174320 683.0 1244 1214 253.4
A 15 174 36679 139.93 1244 1214 253.4
A 0 226 11545 40.76 1244 1214 253.4
B 12 111 26317 103.13 1256 1222 243.3
B 5 255 25620 100.26 1256 1222 243.3
B 0 198 22507 87.47 1256 1222 243.3
C 14 234 25726 86.25 1225 1231 284.0
C 13 61 9105 27.73 1225 1231 284.0
C 8 222 7533 22.19 1225 1231 284.0
D 1 52 1521890 5259.23 1196 1169 289.2
D 2 152 97899 334.53 1196 1169 289.2
D 8 195 96567 329.92 1196 1169 289.2

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