ASTROSAT CZTI

Data Quality Report

Orbit 34234

Creation date: 2022-01-27T05:22:36.853446
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/AS1T05_003T01_9000004886_34234cztM0_level2.evt modeM0/AS1T05_003T01_9000004886_34234cztM0_level2_quad_clean.evt
Size (bytes)347,621,76047,816,640
Size331.5 MB 45.6 MB
Events in quadrant A2,166,386283,239
Events in quadrant B2,290,303296,765
Events in quadrant C2,636,204294,266
Events in quadrant D3,150,435278,800

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0860
B0860
C0860
D0860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A088471
B091471
C0102341
D0120811

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4178150.359023%
B4178250.598372%
C4178892.130206%
D4178581.388224%

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 4178 4178 10 10 0.24% 0.24%
B 4178 4178 10 10 0.24% 0.24%
C 4178 4178 61 61 1.46% 1.46%
D 4178 4178 42 42 1.01% 1.01%

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 9 143 62274 585.13 524 514 105.5
A 15 169 55261 518.68 524 514 105.5
A 10 83 12397 112.58 524 514 105.5
B 5 172 90504 901.24 529 517 99.8
B 5 255 63681 632.6 529 517 99.8
B 0 189 31661 311.91 529 517 99.8
C 14 254 208606 1755.4 515 520 118.5
C 15 214 180444 1517.83 515 520 118.5
C 0 10 131039 1101.05 515 520 118.5
D 8 195 856205 6853.11 515 502 124.9
D 12 6 115966 924.72 515 502 124.9
D 2 249 93617 745.73 515 502 124.9

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