ASTROSAT CZTI

Data Quality Report

Orbit 42653

Creation date: 2024-06-27T22:42:40.491762
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/AS1A05_174T01_9000005820_42653cztM0_level2.fits modeM0/AS1A05_174T01_9000005820_42653cztM0_level2_quad_clean.evt
Size (bytes)422,933,76095,117,760
Size403.3 MB 90.7 MB
Events in quadrant A3,395,154654,153
Events in quadrant B3,045,155659,829
Events in quadrant C2,885,677650,579
Events in quadrant D5,856,150490,345

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0260
C0260
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137382
B0131762
C0123092
D0215842

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6081320.526229%
B60811121.841802%
C608030.049342%
D6080122620.164474%

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 7424 6082 18 18 0.24% 0.30%
B 7424 6082 85 85 1.14% 1.40%
C 7423 6081 1 1 0.01% 0.02%
D 7423 6081 1140 1140 15.36% 18.75%

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 617973 4418.48 670 654 139.7
A 13 248 172093 1227.08 670 654 139.7
A 2 79 10614 71.29 670 654 139.7
B 0 229 235632 1827.29 660 641 128.6
B 10 246 144540 1118.96 660 641 128.6
B 0 245 44944 344.5 660 641 128.6
C 15 214 249907 1621.68 658 663 153.7
C 14 254 36559 233.55 658 663 153.7
C 3 233 13622 84.32 658 663 153.7
D 12 233 2542513 17632.33 578 559 144.2
D 12 6 283781 1964.57 578 559 144.2
D 1 52 277636 1921.95 578 559 144.2

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