ASTROSAT CZTI

Data Quality Report

Orbit 36100

Creation date: 2022-08-10T10:08:25.045525
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_069T01_9000005158_36100cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36100cztM0_level2_quad_clean.evt
Size (bytes)434,540,16063,947,520
Size414.4 MB 61.0 MB
Events in quadrant A2,541,831409,192
Events in quadrant B3,184,335409,088
Events in quadrant C3,149,983391,439
Events in quadrant D3,936,885368,545

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106943
B0126072
C0123712
D0151132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A510650.097924%
B51061683.290247%
C51061402.741872%
D51064007.833921%

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 7019 5107 1 1 0.01% 0.02%
B 7019 5107 110 110 1.57% 2.15%
C 7019 5107 111 111 1.58% 2.17%
D 7019 5107 359 359 5.11% 7.03%

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 10 83 169059 1372.65 609 599 122.7
A 13 6 8264 62.46 609 599 122.7
A 13 254 6490 48.0 609 599 122.7
B 5 172 393720 3400.08 604 589 115.6
B 5 236 151065 1301.43 604 589 115.6
B 5 255 105114 904.01 604 589 115.6
C 0 207 368676 2711.45 584 589 135.8
C 0 10 260970 1918.05 584 589 135.8
C 15 214 227965 1674.93 584 589 135.8
D 1 52 824091 5935.53 563 547 138.7
D 12 6 402795 2899.12 563 547 138.7
D 13 249 358345 2578.75 563 547 138.7

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