ASTROSAT CZTI

Data Quality Report

Orbit 35597

Creation date: 2022-04-29T07:29:35.058418
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/AS1A10_065T04_9000005098_35597cztM0_level2.evt modeM0/AS1A10_065T04_9000005098_35597cztM0_level2_quad_clean.evt
Size (bytes)372,827,52051,177,600
Size355.6 MB 48.8 MB
Events in quadrant A2,755,251307,798
Events in quadrant B2,493,389317,020
Events in quadrant C3,008,646287,293
Events in quadrant D2,696,837289,924

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113093
B0105322
C0117672
D0113272

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4952410.827948%
B4952430.868336%
C49522404.846527%
D4952701.413570%

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 7014 4953 36 36 0.51% 0.73%
B 7014 4953 26 26 0.37% 0.52%
C 7014 4953 163 163 2.32% 3.29%
D 7014 4953 59 59 0.84% 1.19%

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 318373 2687.65 581 568 118.2
A 10 83 129383 1089.38 581 568 118.2
A 7 3 48543 405.72 581 568 118.2
B 5 172 183123 1631.6 580 566 111.9
B 0 189 16201 139.74 580 566 111.9
B 12 111 13789 118.18 580 566 111.9
C 0 10 598958 4663.09 552 556 128.3
C 15 214 201097 1562.73 552 556 128.3
C 9 187 48873 376.51 552 556 128.3
D 7 80 254282 1856.87 559 544 136.6
D 13 249 104302 759.31 559 544 136.6
D 8 230 83418 606.48 559 544 136.6

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