ASTROSAT CZTI

Data Quality Report

Orbit 26613

Creation date: 2024-06-27T19:31:00.058803
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/AS1A09_145T01_9000003848_26613cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26613cztM0_level2_quad_clean.evt
Size (bytes)603,720,00091,143,360
Size575.8 MB 86.9 MB
Events in quadrant A3,625,873608,825
Events in quadrant B4,628,429556,811
Events in quadrant C4,084,547576,142
Events in quadrant D5,444,591505,684

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151240
B0180550
C0165490
D0207620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206
B0228
C0206
D0218

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7185590.821155%
B67751552.287823%
C70681862.631579%
D64965508.466749%

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 16275 8591 7 7 0.04% 0.08%
B 16289 8117 53 53 0.33% 0.65%
C 16307 8437 7 7 0.04% 0.08%
D 16327 7869 430 430 2.63% 5.46%

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 0 13 90965 485.64 913 896 185.5
A 13 254 11942 59.56 913 896 185.5
A 5 168 11166 55.37 913 896 185.5
B 0 189 1198135 7293.53 853 833 164.2
B 15 32 34085 202.56 853 833 164.2
B 0 219 27902 164.89 853 833 164.2
C 3 233 514448 2552.56 853 862 201.2
C 14 238 136786 675.55 853 862 201.2
C 15 208 108874 536.83 853 862 201.2
D 1 52 1548733 8159.38 765 743 189.7
D 7 80 820222 4319.43 765 743 189.7
D 2 250 146003 765.66 765 743 189.7

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