ASTROSAT CZTI

Data Quality Report

Orbit 49868

Creation date: 2024-12-17T07:45:14.821942
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/AS1A13_037T01_9000006440_49868cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49868cztM0_level2_quad_clean.evt
Size (bytes)1,062,673,92041,019,840
Size1013.4 MB 39.1 MB
Events in quadrant A13,331,309146,446
Events in quadrant B4,162,119647,327
Events in quadrant C9,370,24112,886
Events in quadrant D11,999,5309,438

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0437931
B0165521
C0321011
D0398741

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6093480778.893813%
B60942674.381359%
C6094600298.490318%
D6094602398.834920%

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 7298 6093 4432 4432 60.73% 72.74%
B 7299 6094 140 140 1.92% 2.30%
C 7298 6093 1698 1698 23.27% 27.87%
D 7298 6093 2661 2661 36.46% 43.67%

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 4 4 10802445 142819.31 294 287 75.6
A 8 62 354485 4682.98 294 287 75.6
A 3 14 119354 1574.22 294 287 75.6
B 4 206 733092 5167.96 667 645 141.7
B 0 213 191401 1345.93 667 645 141.7
B 0 229 183336 1289.02 667 645 141.7
C 4 111 4978713 203658.33 69 68 24.4
C 15 196 738439 30204.08 69 68 24.4
C 15 197 659767 26985.9 69 68 24.4
D 7 61 8465161 231603.66 111 106 36.5
D 15 185 1048205 28675.96 111 106 36.5
D 8 129 798454 21842.78 111 106 36.5

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