ASTROSAT CZTI

Data Quality Report

Orbit 35163

Creation date: 2022-03-31T00:15:35.887410
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/AS1C07_004T01_9000005042_35163cztM0_level2.evt modeM0/AS1C07_004T01_9000005042_35163cztM0_level2_quad_clean.evt
Size (bytes)609,033,60064,468,800
Size580.8 MB 61.5 MB
Events in quadrant A2,655,091438,043
Events in quadrant B5,151,768410,155
Events in quadrant C2,848,559432,723
Events in quadrant D7,445,155313,730

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111013
B0186832
C0114572
D0258222

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5084400.786782%
B508486216.955153%
C50841052.065303%
D5085164732.389381%

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 7088 5085 31 31 0.44% 0.61%
B 7088 5085 583 583 8.23% 11.47%
C 7088 5085 81 81 1.14% 1.59%
D 7089 5086 1477 1477 20.84% 29.04%

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 15 169 98623 799.75 609 599 122.6
A 10 83 94101 762.86 609 599 122.6
A 9 143 82619 669.18 609 599 122.6
B 5 236 2269772 21136.38 567 555 107.4
B 0 182 309951 2881.84 567 555 107.4
B 5 172 296416 2755.77 567 555 107.4
C 0 10 311820 2310.89 583 588 134.7
C 15 214 209888 1554.04 583 588 134.7
C 1 23 15994 114.39 583 588 134.7
D 5 223 3248802 25704.43 513 497 126.4
D 8 195 933337 7381.73 513 497 126.4
D 7 80 648251 5125.8 513 497 126.4

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