ASTROSAT CZTI

Data Quality Report

Orbit 32783

Creation date: 2024-06-27T20:41:57.115638
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/AS1T04_064T01_9000004730_32783cztM0_level2.evt modeM0/AS1T04_064T01_9000004730_32783cztM0_level2_quad_clean.evt
Size (bytes)660,075,84055,621,440
Size629.5 MB 53.0 MB
Events in quadrant A4,049,674330,068
Events in quadrant B4,024,621332,313
Events in quadrant C3,949,049334,428
Events in quadrant D7,586,776292,034

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158603
B0156372
C0153042
D0265042

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56422594.590571%
B56423115.512230%
C56423245.742644%
D564281914.516129%

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 7375 5643 138 138 1.87% 2.45%
B 7375 5643 223 223 3.02% 3.95%
C 7375 5643 251 251 3.40% 4.45%
D 7375 5643 727 727 9.86% 12.88%

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 15 237 612523 4547.95 671 659 134.5
A 12 16 591418 4391.08 671 659 134.5
A 10 228 87978 649.04 671 659 134.5
B 5 172 859039 6657.67 678 663 128.9
B 5 200 172382 1331.87 678 663 128.9
B 0 219 139905 1079.98 678 663 128.9
C 0 10 1249612 8249.53 651 657 151.4
C 3 233 57768 377.23 651 657 151.4
C 4 254 25903 166.75 651 657 151.4
D 8 195 3869667 23518.11 627 615 164.5
D 2 250 466453 2831.61 627 615 164.5
D 10 203 125124 756.83 627 615 164.5

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