ASTROSAT CZTI

Data Quality Report

Orbit 31491

Creation date: 2024-06-27T20:29:10.891555
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/AS1T04_028T01_9000004584_31491cztM0_level2.evt modeM0/AS1T04_028T01_9000004584_31491cztM0_level2_quad_clean.evt
Size (bytes)278,723,52037,402,560
Size265.8 MB 35.7 MB
Events in quadrant A1,732,648231,784
Events in quadrant B2,602,675230,761
Events in quadrant C1,721,220227,226
Events in quadrant D2,163,537212,388

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07610
B0748
C0759
D0715

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A081831098
B0117211794
C080811086
D099481485

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011
B111
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3230280.866873%
B3232371.144802%
C3245300.924499%
D32231093.381942%

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 10330 3269 15 15 0.15% 0.46%
B 10321 3257 6 6 0.06% 0.18%
C 10332 3276 0 0 0.00% 0.00%
D 10323 3262 103 103 1.00% 3.16%

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 0 13 207393 2543.27 395 387 81.4
A 13 254 5173 58.8 395 387 81.4
A 3 137 4097 45.58 395 387 81.4
B 6 159 908904 11636.09 391 381 78.1
B 12 1 36009 456.31 391 381 78.1
B 0 245 34212 433.3 391 381 78.1
C 3 233 118277 1291.27 381 382 91.3
C 14 238 60889 662.71 381 382 91.3
C 0 10 43571 473.04 381 382 91.3
D 8 195 359466 3919.47 375 364 91.6
D 13 249 264638 2884.46 375 364 91.6
D 12 218 32124 346.65 375 364 91.6

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