ASTROSAT CZTI

Data Quality Report

Orbit 46845

Creation date: 2024-06-27T23:28:24.434720
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_053T01_9000006274_46845cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46845cztM0_level2_quad_clean.evt
Size (bytes)980,714,880204,696,000
Size935.3 MB 195.2 MB
Events in quadrant A11,889,2921,367,783
Events in quadrant B7,240,2631,402,352
Events in quadrant C7,480,8501,313,965
Events in quadrant D8,667,3751,197,950

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0431202
B0304042
C0317162
D0352592

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A132534013.025730%
B132543112.346461%
C132546034.549570%
D132549156.903576%

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 14003 13255 3 3 0.02% 0.02%
B 14004 13256 73 73 0.52% 0.55%
C 14004 13256 346 346 2.47% 2.61%
D 14004 13256 628 628 4.48% 4.74%

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 10 83 6151479 20288.35 1459 1424 303.1
A 7 3 49291 157.91 1459 1424 303.1
A 13 254 20148 61.77 1459 1424 303.1
B 3 112 793577 2791.66 1445 1396 283.8
B 12 3 405224 1423.1 1445 1396 283.8
B 0 198 74166 256.44 1445 1396 283.8
C 14 254 1395080 4185.3 1414 1416 333.0
C 1 241 545125 1632.81 1414 1416 333.0
C 3 233 9872 25.39 1414 1416 333.0
D 13 249 2394609 6817.54 1418 1374 351.0
D 1 52 676413 1922.96 1418 1374 351.0
D 2 37 72591 202.87 1418 1374 351.0

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