ASTROSAT CZTI

Data Quality Report

Orbit 41914

Creation date: 2024-06-27T22:34:25.679691
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/AS1T05_118T01_9000005718_41914cztM0_level2.fits modeM0/AS1T05_118T01_9000005718_41914cztM0_level2_quad_clean.evt
Size (bytes)330,782,40038,779,200
Size315.5 MB 37.0 MB
Events in quadrant A2,196,406293,671
Events in quadrant B1,414,666313,474
Events in quadrant C1,679,228294,612
Events in quadrant D6,733,94971,186

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A083191
B059961
C066551
D0218127

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A28111826.474564%
B2811210.747065%
C28111214.304518%
D2810224880.000000%

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 4154 2812 136 136 3.27% 4.84%
B 4154 2812 11 11 0.26% 0.39%
C 4154 2812 123 123 2.96% 4.37%
D 4153 2811 2179 2179 52.47% 77.52%

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 14 24 667341 10469.07 303 296 63.7
A 10 83 275558 4320.16 303 296 63.7
A 7 3 41954 653.81 303 296 63.7
B 5 32 78766 1278.56 310 301 61.4
B 7 202 46901 759.33 310 301 61.4
B 0 190 20161 323.61 310 301 61.4
C 0 10 376953 5425.85 294 294 69.4
C 15 214 109800 1577.46 294 294 69.4
C 15 111 26869 382.82 294 294 69.4
D 12 79 5960386 155134.86 152 147 38.4
D 13 249 92550 2405.09 152 147 38.4
D 12 6 57158 1483.9 152 147 38.4

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