ASTROSAT CZTI

Data Quality Report

Orbit 30238

Creation date: 2024-06-27T20:12:31.626768
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/AS1A10_007T01_9000004350_30238cztM0_level2.evt modeM0/AS1A10_007T01_9000004350_30238cztM0_level2_quad_clean.evt
Size (bytes)580,034,880112,420,800
Size553.2 MB 107.2 MB
Events in quadrant A4,616,613706,697
Events in quadrant B5,331,912770,360
Events in quadrant C3,674,682748,539
Events in quadrant D3,505,663727,894

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177502
B0200562
C0148692
D0143072

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64664476.913084%
B6466901.391896%
C6466941.453758%
D646550.077340%

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 7846 6467 345 345 4.40% 5.33%
B 7846 6467 1 1 0.01% 0.02%
C 7846 6467 1 1 0.01% 0.02%
D 7845 6466 2 2 0.03% 0.03%

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 0 13 1271125 7547.01 851 837 168.3
A 14 239 33080 191.56 851 837 168.3
A 8 192 25531 146.71 851 837 168.3
B 6 159 1822105 11056.19 881 862 164.7
B 0 229 45705 272.23 881 862 164.7
B 12 111 19073 110.55 881 862 164.7
C 14 238 146775 723.71 864 875 201.6
C 3 233 136470 672.6 864 875 201.6
C 2 114 14917 69.65 864 875 201.6
D 8 195 214916 1054.39 858 842 203.0
D 2 234 22945 108.87 858 842 203.0
D 2 250 17653 82.8 858 842 203.0

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