ASTROSAT CZTI

Data Quality Report

Orbit 41666

Creation date: 2024-06-27T22:31:18.821807
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/AS1T05_116T01_9000005682_41666cztM0_level2.fits modeM0/AS1T05_116T01_9000005682_41666cztM0_level2_quad_clean.evt
Size (bytes)334,811,52085,288,320
Size319.3 MB 81.3 MB
Events in quadrant A2,760,400575,130
Events in quadrant B2,351,534585,495
Events in quadrant C2,901,603548,402
Events in quadrant D3,969,108504,080

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115592
B0108752
C0120752
D0155822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5272160.303490%
B5272370.701821%
C52722033.850531%
D52723496.619879%

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 7096 5273 12 12 0.17% 0.23%
B 7096 5273 27 27 0.38% 0.51%
C 7096 5273 202 202 2.85% 3.83%
D 7096 5273 344 344 4.85% 6.52%

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 518867 4542.68 557 545 114.1
A 13 248 71154 618.83 557 545 114.1
A 2 79 7712 62.81 557 545 114.1
B 4 141 103492 957.82 554 538 107.5
B 0 190 34961 320.25 554 538 107.5
B 0 245 27175 247.81 554 538 107.5
C 0 10 556103 4426.38 537 540 125.5
C 15 214 209850 1667.65 537 540 125.5
C 14 17 32703 256.25 537 540 125.5
D 13 249 1346299 10259.63 534 520 131.2
D 2 249 260100 1978.93 534 520 131.2
D 12 217 89478 678.18 534 520 131.2

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