ASTROSAT CZTI

Data Quality Report

Orbit 23177

Creation date: 2024-06-27T18:50:55.631950
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_148T05_9000003424_23177cztM0_level2.evt modeM0/AS1A07_148T05_9000003424_23177cztM0_level2_quad_clean.evt
Size (bytes)1,567,097,280299,260,800
Size1.5 GB 285.4 MB
Events in quadrant A13,948,6511,905,125
Events in quadrant B10,762,4782,027,976
Events in quadrant C11,039,2771,949,780
Events in quadrant D10,454,7341,899,496

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03760
B03760
C03760
D03760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0537584
B0439404
C0446914
D0435175

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1860814057.550516%
B186098354.487076%
C186096603.546671%
D186082661.429493%

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 25974 18612 1041 1041 4.01% 5.59%
B 25975 18612 465 465 1.79% 2.50%
C 25975 18613 196 196 0.75% 1.05%
D 25975 18612 168 168 0.65% 0.90%

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 6 16 5078751 11051.49 2302 2253 459.3
A 13 254 28303 56.71 2302 2253 459.3
A 0 226 19714 38.01 2302 2253 459.3
B 0 245 1578712 3594.24 2333 2279 438.6
B 12 111 52999 115.64 2333 2279 438.6
B 11 111 46501 100.83 2333 2279 438.6
C 0 10 1226774 2337.36 2269 2287 523.9
C 14 238 364004 690.46 2269 2287 523.9
C 2 16 330341 626.21 2269 2287 523.9
D 7 238 1070093 1927.9 2298 2241 553.9
D 1 52 262103 469.15 2298 2241 553.9
D 12 233 226559 404.98 2298 2241 553.9

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