ASTROSAT CZTI

Data Quality Report

Orbit 08551

Creation date: 2024-06-27T15:34:08.936944
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/AS1G07_060T01_9000001200_08551cztM0_level2.evt modeM0/AS1G07_060T01_9000001200_08551cztM0_level2_quad_clean.evt
Size (bytes)423,322,56088,464,960
Size403.7 MB 84.4 MB
Events in quadrant A3,226,817557,021
Events in quadrant B3,127,606565,701
Events in quadrant C2,928,109560,410
Events in quadrant D3,094,317541,205

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143323
B0137802
C0133722
D0140872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6520871.334356%
B6520460.705521%
C6520230.352761%
D6520681.042945%

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 7610 6521 32 32 0.42% 0.49%
B 7610 6521 7 7 0.09% 0.11%
C 7610 6520 0 0 0.00% 0.00%
D 7610 6520 35 35 0.46% 0.54%

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 15 223 218766 1430.13 760 745 152.4
A 15 239 73086 474.53 760 745 152.4
A 0 226 6925 40.54 760 745 152.4
B 10 16 62650 421.45 766 746 146.9
B 0 214 26750 177.04 766 746 146.9
B 10 246 20572 134.98 766 746 146.9
C 13 61 5527 27.72 749 755 172.1
C 9 54 4231 20.19 749 755 172.1
C 12 4 1924 6.79 749 755 172.1
D 7 71 155311 849.9 740 721 181.9
D 1 52 28470 152.56 740 721 181.9
D 12 233 26480 141.62 740 721 181.9

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