ASTROSAT CZTI

Data Quality Report

Orbit 35247

Creation date: 2022-04-05T15:50:31.749030
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_9000005052_35247cztM0_level2.evt modeM0/AS1C07_004T01_9000005052_35247cztM0_level2_quad_clean.evt
Size (bytes)718,018,56088,977,600
Size684.8 MB 84.9 MB
Events in quadrant A3,141,566632,119
Events in quadrant B7,279,110542,407
Events in quadrant C3,140,131645,239
Events in quadrant D7,845,189520,687

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125093
B0252302
C0125652
D0268722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50351252.482622%
B5035179735.690169%
C50351382.740814%
D5035148629.513406%

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 7098 5036 95 95 1.34% 1.89%
B 7098 5036 1296 1296 18.26% 25.73%
C 7098 5036 87 87 1.23% 1.73%
D 7098 5036 1301 1301 18.33% 25.83%

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 7 3 427850 3196.33 672 661 133.6
A 10 83 96395 716.31 672 661 133.6
A 9 143 12919 91.72 672 661 133.6
B 5 236 4113376 38207.3 576 565 107.6
B 5 172 704230 6536.92 576 565 107.6
B 3 112 129413 1196.97 576 565 107.6
C 0 10 401033 2737.71 645 651 146.2
C 15 214 212771 1450.42 645 651 146.2
C 14 67 4942 29.34 645 651 146.2
D 7 80 2537496 17806.13 585 570 142.5
D 8 195 2054767 14417.96 585 570 142.5
D 2 250 277224 1941.77 585 570 142.5

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