ASTROSAT CZTI

Data Quality Report

Orbit 26411

Creation date: 2024-06-27T19:28:41.472122
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/AS1A09_127T02_9000003818_26411cztM0_level2.evt modeM0/AS1A09_127T02_9000003818_26411cztM0_level2_quad_clean.evt
Size (bytes)783,515,520126,440,640
Size747.2 MB 120.6 MB
Events in quadrant A4,414,915828,791
Events in quadrant B5,785,701796,497
Events in quadrant C6,273,493783,251
Events in quadrant D6,619,568769,351

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193090
B0231600
C0245570
D0261600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9381961.023345%
B93824915.233426%
C93825455.808996%
D93824094.359412%

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 11086 9383 1 1 0.01% 0.01%
B 11086 9383 327 327 2.95% 3.49%
C 11087 9383 231 231 2.08% 2.46%
D 11087 9384 242 242 2.18% 2.58%

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 13 254 16890 68.95 1140 1113 228.8
A 0 13 14509 58.54 1140 1113 228.8
A 3 137 10338 40.31 1140 1113 228.8
B 5 172 1022353 4856.78 1106 1080 210.3
B 0 244 242126 1146.32 1106 1080 210.3
B 0 190 41282 191.19 1106 1080 210.3
C 3 233 1182993 4703.2 1075 1081 251.3
C 2 16 624502 2480.79 1075 1081 251.3
C 14 238 170319 673.45 1075 1081 251.3
D 1 52 2013955 7768.72 1093 1067 259.1
D 12 233 310605 1194.66 1093 1067 259.1
D 2 234 48772 184.12 1093 1067 259.1

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