ASTROSAT CZTI

Data Quality Report

Orbit 43550

Creation date: 2024-06-27T22:53:04.443524
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_9000005880_43550cztM0_level2.fits modeM0/AS1A05_174T01_9000005880_43550cztM0_level2_quad_clean.evt
Size (bytes)2,113,182,720134,735,040
Size2.0 GB 128.5 MB
Events in quadrant A13,631,6821,294,426
Events in quadrant B6,952,4591,376,259
Events in quadrant C30,535,759448,861
Events in quadrant D26,158,30199,285

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0493302
B0289702
C09902910
D0860962

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500
B02500
C02500
D02500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12268141511.534072%
B122683332.714379%
C122671175995.858808%
D1226712267100.000000%

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 13503 12269 602 602 4.46% 4.91%
B 13503 12269 171 171 1.27% 1.39%
C 13501 12266 10879 10879 80.58% 88.69%
D 13501 12266 8799 8799 65.17% 71.73%

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 0 228 4373572 15936.3 1330 1305 274.4
A 15 222 1629748 5935.45 1330 1305 274.4
A 10 83 1205158 4387.88 1330 1305 274.4
B 0 85 615546 2318.3 1372 1333 264.9
B 3 42 312483 1174.41 1372 1333 264.9
B 0 230 137918 515.53 1372 1333 264.9
C 15 174 9860374 86456.97 484 486 114.0
C 15 142 7659855 67161.6 484 486 114.0
C 15 126 6412204 56221.5 484 486 114.0
D 4 216 18346191 242572.07 148 136 75.6
D 4 212 2454789 32455.49 148 136 75.6
D 8 48 660280 8728.44 148 136 75.6

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