ASTROSAT CZTI

Data Quality Report

Orbit 23413

Creation date: 2024-06-27T18:54:02.892033
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/AS1A07_127T02_9000003460_23413cztM0_level2.evt modeM0/AS1A07_127T02_9000003460_23413cztM0_level2_quad_clean.evt
Size (bytes)586,753,92093,539,520
Size559.6 MB 89.2 MB
Events in quadrant A4,141,340563,480
Events in quadrant B4,249,478570,229
Events in quadrant C4,434,299543,721
Events in quadrant D4,341,727538,192

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181971
B0182981
C0188121
D0187581

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01800
B01800
C01800
D01800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8887530.596377%
B8887670.753910%
C88881461.642664%
D8888710.798830%

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 9402 8887 2 2 0.02% 0.02%
B 9402 8887 5 5 0.05% 0.06%
C 9403 8888 59 59 0.63% 0.66%
D 9403 8888 9 9 0.10% 0.10%

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 15 174 78104 364.45 1050 1027 211.5
A 13 254 14581 64.09 1050 1027 211.5
A 10 253 10289 43.79 1050 1027 211.5
B 0 189 67516 326.93 1050 1024 203.4
B 12 111 25288 119.3 1050 1024 203.4
B 0 183 22896 107.54 1050 1024 203.4
C 10 9 328189 1368.72 1010 1016 239.0
C 14 238 161506 671.41 1010 1016 239.0
C 7 247 8461 31.15 1010 1016 239.0
D 1 52 151479 600.88 1025 995 250.4
D 7 238 107120 423.76 1025 995 250.4
D 13 172 81821 322.74 1025 995 250.4

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