ASTROSAT CZTI

Data Quality Report

Orbit 34665

Creation date: 2022-02-25T08:07:35.354260
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_008T01_9000004956_34665cztM0_level2.evt modeM0/AS1T05_008T01_9000004956_34665cztM0_level2_quad_clean.evt
Size (bytes)343,707,84050,088,960
Size327.8 MB 47.8 MB
Events in quadrant A1,883,111313,080
Events in quadrant B2,892,518301,456
Events in quadrant C2,027,157316,836
Events in quadrant D3,330,953299,840

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A083151
B0112941
C085211
D0126941

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4044140.346192%
B40443478.580613%
C4044200.494560%
D40442195.415430%

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 4044 4044 10 10 0.25% 0.25%
B 4044 4044 250 250 6.18% 6.18%
C 4044 4044 15 15 0.37% 0.37%
D 4044 4044 192 192 4.75% 4.75%

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 15 174 43778 467.47 456 448 92.7
A 13 6 27175 288.34 456 448 92.7
A 10 83 25782 273.32 456 448 92.7
B 5 172 834494 9876.97 439 428 84.4
B 5 255 258846 3060.17 439 428 84.4
B 5 200 29872 348.67 439 428 84.4
C 15 214 168087 1644.23 440 442 102.0
C 0 10 80216 782.41 440 442 102.0
C 14 67 40422 392.12 440 442 102.0
D 8 195 1051602 10045.91 424 411 104.6
D 12 233 454652 4341.04 424 411 104.6
D 10 199 60303 572.37 424 411 104.6

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