ASTROSAT CZTI

Data Quality Report

Orbit 43772

Creation date: 2024-06-27T22:55:35.401508
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_026T01_9000005904_43772cztM0_level2.fits modeM0/AS1A13_026T01_9000005904_43772cztM0_level2_quad_clean.evt
Size (bytes)1,824,505,920278,317,440
Size1.7 GB 265.4 MB
Events in quadrant A15,817,5171,889,344
Events in quadrant B13,072,9852,006,515
Events in quadrant C19,009,7121,655,716
Events in quadrant D18,165,9801,559,619

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0604444
B0517444
C0695344
D0671884

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03860
B03860
C03860
D03880

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1907714407.548357%
B1907711085.808041%
C19077292615.337841%
D19078267314.010903%

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 20277 19082 735 735 3.62% 3.85%
B 20277 19082 534 534 2.63% 2.80%
C 20277 19082 2388 2388 11.78% 12.51%
D 20278 19083 1959 1959 9.66% 10.27%

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 2584696 5844.31 2113 2070 441.9
A 13 248 1961030 4433.0 2113 2070 441.9
A 15 223 1437218 3247.65 2113 2070 441.9
B 0 200 1874512 4474.97 2138 2075 418.4
B 5 235 913562 2178.38 2138 2075 418.4
B 5 172 326788 776.04 2138 2075 418.4
C 15 174 6702046 14409.44 1982 1997 465.0
C 15 158 2722425 5850.68 1982 1997 465.0
C 3 233 597676 1281.09 1982 1997 465.0
D 5 235 3616404 7020.64 2003 1941 514.8
D 5 222 1452261 2817.06 2003 1941 514.8
D 1 52 1161339 2251.98 2003 1941 514.8

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