ASTROSAT CZTI

Data Quality Report

Orbit 27653

Creation date: 2024-06-27T19:42:38.210222
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/AS1T03_257T01_9000003976_27653cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27653cztM0_level2_quad_clean.evt
Size (bytes)700,698,24089,470,080
Size668.2 MB 85.3 MB
Events in quadrant A3,904,409563,873
Events in quadrant B4,755,464571,180
Events in quadrant C3,964,390549,062
Events in quadrant D8,054,079468,370

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167690
B0192270
C0168820
D0292380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80113013.757334%
B80114585.717139%
C80113224.019473%
D8011149718.686806%

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 8416 8011 0 0 0.00% 0.00%
B 8416 8011 83 83 0.99% 1.04%
C 8416 8011 0 0 0.00% 0.00%
D 8416 8012 1245 1245 14.79% 15.54%

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 6 16 50749 245.67 992 967 202.6
A 7 192 18545 86.75 992 967 202.6
A 13 254 13224 60.49 992 967 202.6
B 10 245 843275 4429.25 979 952 190.2
B 12 111 24139 121.93 979 952 190.2
B 15 32 22600 113.83 979 952 190.2
C 14 238 152539 680.58 951 956 222.7
C 2 16 79986 354.83 951 956 222.7
C 8 128 12288 50.88 951 956 222.7
D 1 52 1923854 8900.16 902 874 216.1
D 12 233 1909150 8832.11 902 874 216.1
D 7 80 638043 2949.02 902 874 216.1

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