ASTROSAT CZTI

Data Quality Report

Orbit 48420

Creation date: 2024-09-10T19:31:09.553453
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/AS1A13_029T01_9000006426_48420cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48420cztM0_level2_quad_clean.evt
Size (bytes)1,833,013,440433,126,080
Size1.7 GB 413.1 MB
Events in quadrant A28,607,1142,826,907
Events in quadrant B12,850,4032,974,316
Events in quadrant C11,721,4332,877,985
Events in quadrant D12,627,7542,613,358

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01056875
B0566695
C0543945
D0568735

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05440
B05440
C05440
D05440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0520
B0520
C0520
D0520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2648414035.297538%
B264856202.340948%
C264851890.713611%
D264853611.363036%

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 31825 26491 421 421 1.32% 1.59%
B 31826 26492 210 210 0.66% 0.79%
C 31826 26492 0 0 0.00% 0.00%
D 31826 26492 111 111 0.35% 0.42%

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 15665428 25598.39 2963 2900 611.9
A 13 248 1386459 2261.25 2963 2900 611.9
A 13 254 53361 82.47 2963 2900 611.9
B 12 16 858744 1473.59 2969 2873 580.8
B 5 171 76079 126.04 2969 2873 580.8
B 12 111 74753 123.76 2969 2873 580.8
C 15 208 78942 108.93 2958 2976 697.4
C 14 254 40657 54.03 2958 2976 697.4
C 12 2 24177 30.4 2958 2976 697.4
D 2 249 291697 387.27 2971 2881 745.8
D 5 32 220069 291.23 2971 2881 745.8
D 12 2 183468 242.15 2971 2881 745.8

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