ASTROSAT CZTI

Data Quality Report

Orbit 37479

Creation date: 2024-06-27T21:40:33.162125
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/AS1C07_001T11_9000005326_37479cztM0_level2.evt modeM0/AS1C07_001T11_9000005326_37479cztM0_level2_quad_clean.evt
Size (bytes)415,218,24097,407,360
Size396.0 MB 92.9 MB
Events in quadrant A2,628,959656,447
Events in quadrant B2,749,842668,497
Events in quadrant C2,815,796659,814
Events in quadrant D4,032,189606,342

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109963
B0115562
C0115622
D0155742

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5115100.195503%
B5115831.622678%
C5115801.564027%
D51153827.468231%

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 7237 5116 4 4 0.06% 0.08%
B 7237 5116 62 62 0.86% 1.21%
C 7237 5116 63 63 0.87% 1.23%
D 7237 5116 374 374 5.17% 7.31%

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 278050 2391.68 576 566 116.0
A 13 248 33224 281.48 576 566 116.0
A 15 222 28123 237.52 576 566 116.0
B 5 255 205442 1899.0 571 556 107.9
B 4 232 80674 742.58 571 556 107.9
B 5 172 75318 692.94 571 556 107.9
C 14 254 286082 2206.56 557 563 129.4
C 15 214 219580 1692.61 557 563 129.4
C 0 10 70221 538.33 557 563 129.4
D 13 249 1037064 7964.37 541 526 130.1
D 2 249 345705 2652.23 541 526 130.1
D 13 171 179304 1373.66 541 526 130.1

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