ASTROSAT CZTI

Data Quality Report

Orbit 16976

Creation date: 2024-06-27T17:30:16.663917
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_188T01_9000002520_16976cztM0_level2.evt modeM0/AS1A05_188T01_9000002520_16976cztM0_level2_quad_clean.evt
Size (bytes)306,005,76065,813,760
Size291.8 MB 62.8 MB
Events in quadrant A1,873,036430,586
Events in quadrant B1,992,835445,410
Events in quadrant C2,298,331424,845
Events in quadrant D2,825,044404,601

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A083221
B086591
C093741
D0111621

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A407540.098160%
B4075170.417178%
C4075190.466258%
D40751954.785276%

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 4076 4076 1 1 0.02% 0.02%
B 4076 4076 3 3 0.07% 0.07%
C 4076 4076 0 0 0.00% 0.00%
D 4076 4076 177 177 4.34% 4.34%

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 26278 265.9 478 468 97.1
A 12 189 7602 73.5 478 468 97.1
A 0 226 4101 37.43 478 468 97.1
B 3 64 40846 440.08 485 474 91.7
B 0 197 26826 287.26 485 474 91.7
B 0 229 12433 130.36 485 474 91.7
C 3 233 373981 3363.52 473 476 111.0
C 14 238 74790 669.22 473 476 111.0
C 0 207 3493 27.17 473 476 111.0
D 1 52 1064952 9464.02 463 450 112.5
D 2 234 15211 131.23 463 450 112.5
D 2 152 7531 62.95 463 450 112.5

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