ASTROSAT CZTI

Data Quality Report

Orbit 41795

Creation date: 2024-06-27T22:32:54.413283
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_052T04_9000005700_41795cztM0_level2.fits modeM0/AS1A12_052T04_9000005700_41795cztM0_level2_quad_clean.evt
Size (bytes)304,418,88087,989,760
Size290.3 MB 83.9 MB
Events in quadrant A2,936,044598,600
Events in quadrant B2,432,063606,872
Events in quadrant C3,104,302555,920
Events in quadrant D2,399,051546,258

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118012
B0105812
C0121842
D0107012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5092250.490966%
B5092140.274941%
C50922595.086410%
D5092150.294580%

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 7215 5093 16 16 0.22% 0.31%
B 7215 5093 2 2 0.03% 0.04%
C 7215 5093 253 253 3.51% 4.97%
D 7215 5093 14 14 0.19% 0.27%

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 550862 4649.9 576 563 118.3
A 15 223 102601 862.19 576 563 118.3
A 2 79 40196 334.89 576 563 118.3
B 0 186 46264 423.91 570 554 107.8
B 4 171 40204 367.71 570 554 107.8
B 0 245 37221 340.05 570 554 107.8
C 0 10 811456 6484.85 535 538 125.0
C 15 214 198860 1585.97 535 538 125.0
C 12 249 5797 42.06 535 538 125.0
D 13 249 85117 610.91 562 547 138.4
D 12 6 31310 222.22 562 547 138.4
D 1 52 29092 206.2 562 547 138.4

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