ASTROSAT CZTI

Data Quality Report

Orbit 17186

Creation date: 2024-06-27T17:33:20.625459
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/AS1A05_185T04_9000002548_17186cztM0_level2.evt modeM0/AS1A05_185T04_9000002548_17186cztM0_level2_quad_clean.evt
Size (bytes)587,545,92098,412,480
Size560.3 MB 93.9 MB
Events in quadrant A4,107,112611,777
Events in quadrant B4,291,088609,603
Events in quadrant C4,130,613590,711
Events in quadrant D4,693,795583,329

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177752
B0181442
C0176302
D0197772

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84162593.077471%
B84173454.098848%
C84162903.445817%
D84162492.958650%

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 8941 8418 4 4 0.04% 0.05%
B 8942 8419 29 29 0.32% 0.34%
C 8941 8418 0 0 0.00% 0.00%
D 8941 8418 73 73 0.82% 0.87%

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 12 189 69323 325.77 1033 1007 209.7
A 12 96 55638 260.51 1033 1007 209.7
A 9 143 10511 45.32 1033 1007 209.7
B 0 219 104827 518.15 1033 1004 200.4
B 0 197 25099 120.25 1033 1004 200.4
B 12 111 24251 116.02 1033 1004 200.4
C 14 238 152405 634.99 1000 1004 238.4
C 3 233 73966 306.01 1000 1004 238.4
C 13 61 7204 26.0 1000 1004 238.4
D 5 222 692240 2776.6 1011 978 249.0
D 10 70 118599 472.45 1011 978 249.0
D 12 233 44268 173.88 1011 978 249.0

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