ASTROSAT CZTI

Data Quality Report

Orbit 38656

Creation date: 2024-06-27T21:54:43.860447
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/AS1A12_054T01_9000005392_38656cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38656cztM0_level2_quad_clean.evt
Size (bytes)125,349,12034,678,080
Size119.5 MB 33.1 MB
Events in quadrant A1,091,402236,279
Events in quadrant B1,310,858226,468
Events in quadrant C973,355227,974
Events in quadrant D1,103,629211,525

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A044522
B052821
C041451
D046721

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A203390.442696%
B20331165.705853%
C203330.147565%
D2033371.819970%

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 3346 2034 5 5 0.15% 0.25%
B 3346 2034 103 103 3.08% 5.06%
C 3346 2034 3 3 0.09% 0.15%
D 3346 2034 32 32 0.96% 1.57%

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 135521 2752.08 232 227 49.2
A 9 143 38455 777.61 232 227 49.2
A 12 227 7791 153.86 232 227 49.2
B 5 184 402385 8848.93 225 219 45.4
B 12 111 5556 117.43 225 219 45.4
B 15 85 5543 117.14 225 219 45.4
C 15 214 79769 1474.83 222 223 53.9
C 14 254 10705 194.34 222 223 53.9
C 0 10 9933 180.03 222 223 53.9
D 12 227 99074 1747.21 221 214 56.6
D 12 6 39616 696.38 221 214 56.6
D 13 249 35390 621.69 221 214 56.6

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