ASTROSAT CZTI

Data Quality Report

Orbit 17486

Creation date: 2024-06-27T17:37:03.788392
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/AS1A05_149T03_9000002590_17486cztM0_level2.evt modeM0/AS1A05_149T03_9000002590_17486cztM0_level2_quad_clean.evt
Size (bytes)199,981,44027,031,680
Size190.7 MB 25.8 MB
Events in quadrant A1,252,467176,602
Events in quadrant B1,193,861181,508
Events in quadrant C1,177,098172,225
Events in quadrant D2,287,401134,430

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A049251
B047811
C046891
D081991

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21201537.216981%
B21201115.235849%
C21201225.754717%
D212051224.150943%

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 3390 2120 15 15 0.44% 0.71%
B 3390 2120 0 0 0.00% 0.00%
C 3390 2121 0 0 0.00% 0.00%
D 3390 2120 377 377 11.12% 17.78%

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 98503 1595.95 299 292 61.5
A 0 226 2784 40.5 299 292 61.5
A 12 194 2324 33.02 299 292 61.5
B 0 230 13453 229.52 296 289 57.4
B 4 48 8711 146.84 296 289 57.4
B 12 111 6197 103.01 296 289 57.4
C 14 238 44026 657.43 284 285 66.5
C 5 218 17322 256.07 284 285 66.5
C 5 219 4608 64.97 284 285 66.5
D 1 52 1150639 18073.8 261 253 63.6
D 13 189 60441 945.62 261 253 63.6
D 7 238 27660 430.59 261 253 63.6

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