ASTROSAT CZTI

Data Quality Report

Orbit 38145

Creation date: 2024-06-27T21:48:57.674617
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_001T12_9000005366_38145cztM0_level2.fits modeM0/AS1C07_001T12_9000005366_38145cztM0_level2_quad_clean.evt
Size (bytes)742,596,480237,150,720
Size708.2 MB 226.2 MB
Events in quadrant A6,796,2051,606,680
Events in quadrant B6,387,0651,653,656
Events in quadrant C6,319,5731,585,420
Events in quadrant D6,965,8051,427,411

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0282364
B0276153
C0268303
D0298923

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13150330.250951%
B13150680.517110%
C13150180.136882%
D131501641.247148%

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 19490 13153 19 19 0.10% 0.14%
B 19490 13153 41 41 0.21% 0.31%
C 19490 13153 10 10 0.05% 0.08%
D 19490 13153 141 141 0.72% 1.07%

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 760460 2576.32 1488 1465 294.6
A 12 16 165769 557.71 1488 1465 294.6
A 9 143 52982 174.87 1488 1465 294.6
B 4 171 221385 800.08 1486 1450 274.9
B 5 172 116685 419.2 1486 1450 274.9
B 0 229 89525 320.4 1486 1450 274.9
C 15 214 540418 1624.6 1448 1461 331.7
C 3 233 46685 136.32 1448 1461 331.7
C 0 10 35172 101.61 1448 1461 331.7
D 13 249 640980 1887.47 1424 1387 338.9
D 1 52 218832 641.69 1424 1387 338.9
D 7 223 207968 609.63 1424 1387 338.9

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