ASTROSAT CZTI

Data Quality Report

Orbit 27328

Creation date: 2024-06-27T19:38:55.468340
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/AS1T03_255T01_9000003922_27328cztM0_level2.evt modeM0/AS1T03_255T01_9000003922_27328cztM0_level2_quad_clean.evt
Size (bytes)525,611,520118,019,520
Size501.3 MB 112.6 MB
Events in quadrant A3,602,357821,716
Events in quadrant B4,513,347797,002
Events in quadrant C3,448,185761,029
Events in quadrant D3,934,697762,642

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148790
B0176580
C0142800
D0159360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6197981.581410%
B61963756.052292%
C61961402.259522%
D61961101.775339%

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 7532 6197 2 2 0.03% 0.03%
B 7531 6196 197 197 2.62% 3.18%
C 7531 6196 1 1 0.01% 0.02%
D 7531 6196 35 35 0.46% 0.56%

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 14 235 34324 184.02 917 903 181.6
A 13 248 20476 107.77 917 903 181.6
A 13 254 10523 52.97 917 903 181.6
B 3 64 886027 5428.91 879 862 163.0
B 7 205 80549 488.74 879 862 163.0
B 0 182 32390 193.37 879 862 163.0
C 14 238 140503 718.34 844 851 194.4
C 0 207 10286 48.53 844 851 194.4
C 2 16 7442 33.9 844 851 194.4
D 12 227 233788 1130.85 869 852 206.0
D 2 250 185545 896.64 869 852 206.0
D 1 52 111481 537.08 869 852 206.0

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