ASTROSAT CZTI

Data Quality Report

Orbit 30670

Creation date: 2024-06-27T20:18:23.554640
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_094T79_9000004422_30670cztM0_level2.evt modeM0/AS1A10_094T79_9000004422_30670cztM0_level2_quad_clean.evt
Size (bytes)656,121,600121,089,600
Size625.7 MB 115.5 MB
Events in quadrant A3,044,420849,992
Events in quadrant B4,496,418850,901
Events in quadrant C3,094,714825,038
Events in quadrant D8,847,492739,229

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126891
B0174791
C0127331
D0302611

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5752480.834492%
B5753570.990787%
C5753921.599166%
D5753124221.588736%

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 6932 5752 16 16 0.23% 0.28%
B 6933 5753 0 0 0.00% 0.00%
C 6933 5754 1 1 0.01% 0.02%
D 6933 5754 1362 1362 19.65% 23.67%

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 173450 1185.32 741 730 145.7
A 8 192 11789 75.89 741 730 145.7
A 13 254 9486 60.09 741 730 145.7
B 6 159 1610823 11793.75 732 716 136.5
B 12 111 16052 112.33 732 716 136.5
B 11 111 14984 104.51 732 716 136.5
C 14 238 119201 711.16 720 727 166.6
C 3 233 96319 573.8 720 727 166.6
C 0 10 24401 142.11 720 727 166.6
D 8 195 4332020 27151.15 690 674 159.5
D 12 227 718467 4499.5 690 674 159.5
D 12 79 424861 2659.03 690 674 159.5

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