ASTROSAT CZTI

Data Quality Report

Orbit 14793

Creation date: 2024-06-27T16:59:45.090102
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/AS1A04_022T02_9000002184_14793cztM0_level2.evt modeM0/AS1A04_022T02_9000002184_14793cztM0_level2_quad_clean.evt
Size (bytes)496,442,88075,473,280
Size473.4 MB 72.0 MB
Events in quadrant A3,313,263473,532
Events in quadrant B4,092,007459,260
Events in quadrant C3,958,418458,858
Events in quadrant D3,242,086452,307

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134332
B0160601
C0168661
D0133691

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6325931.470356%
B63253315.233202%
C6325721.138340%
D6325911.438735%

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 7651 6327 1 1 0.01% 0.02%
B 7651 6327 142 142 1.86% 2.24%
C 7651 6327 0 0 0.00% 0.00%
D 7651 6327 18 18 0.24% 0.28%

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 12 189 42023 242.51 848 831 169.9
A 7 32 8800 46.92 848 831 169.9
A 0 226 7686 40.36 848 831 169.9
B 10 16 306988 2008.54 820 802 152.4
B 0 229 192341 1256.47 820 802 152.4
B 3 64 187899 1227.33 820 802 152.4
C 3 233 814405 4473.08 804 810 181.9
C 13 61 5818 27.53 804 810 181.9
C 3 232 3251 13.42 804 810 181.9
D 13 172 58714 267.39 813 798 216.6
D 2 120 26713 119.65 813 798 216.6
D 2 234 25558 114.32 813 798 216.6

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