ASTROSAT CZTI

Data Quality Report

Orbit 32860

Creation date: 2024-06-27T20:42:44.703219
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/AS1A11_005T04_9000004742_32860cztM0_level2.evt modeM0/AS1A11_005T04_9000004742_32860cztM0_level2_quad_clean.evt
Size (bytes)369,861,12037,382,400
Size352.7 MB 35.7 MB
Events in quadrant A1,615,170272,044
Events in quadrant B2,645,590239,434
Events in quadrant C1,838,642256,528
Events in quadrant D4,885,667137,826

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0231

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A098853086
B0146444720
C0111653702
D02645010003

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09630
B09834
C09933
D010034

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A333070.210210%
B323643813.535229%
C3257631.934295%
D2817133547.390841%

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 7071 3767 0 0 0.00% 0.00%
B 7068 3704 296 296 4.19% 7.99%
C 7071 3688 36 36 0.51% 0.98%
D 7071 3221 1177 1177 16.65% 36.54%

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 14 238 17318 203.46 411 404 83.1
A 9 143 7529 85.71 411 404 83.1
A 13 254 5863 65.67 411 404 83.1
B 5 172 1094046 15157.31 375 367 72.2
B 0 197 19343 262.99 375 367 72.2
B 0 230 16509 223.71 375 367 72.2
C 0 10 144625 1631.99 384 387 88.4
C 3 233 120300 1356.76 384 387 88.4
C 14 67 35624 398.69 384 387 88.4
D 12 227 2619496 41662.23 258 253 62.9
D 2 16 724233 11515.78 258 253 62.9
D 8 195 297949 4735.21 258 253 62.9

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