ASTROSAT CZTI

Data Quality Report

Orbit 01291

Creation date: 2024-06-27T14:10:29.363790
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/AS1G04_002T02_9000000230_01291cztM0_level2.evt modeM0/AS1G04_002T02_9000000230_01291cztM0_level2_quad_clean.evt
Size (bytes)1,378,189,44094,276,800
Size1.3 GB 89.9 MB
Events in quadrant A8,012,715632,158
Events in quadrant B11,726,901601,750
Events in quadrant C7,813,192609,778
Events in quadrant D13,760,695558,668

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284182
B0394661
C0278241
D0455631

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6484370.570635%
B648465110.040099%
C64841302.004935%
D6484101915.715608%

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 7014 6485 317 317 4.52% 4.89%
B 7013 6484 2097 2097 29.90% 32.34%
C 7014 6486 332 332 4.73% 5.12%
D 7014 6484 3495 3495 49.83% 53.90%

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 4 32 262658 541.13 2000 2013 481.7
A 12 243 35781 70.11 2000 2013 481.7
A 15 127 15546 28.1 2000 2013 481.7
B 10 213 3162892 6682.83 2003 2014 473.0
B 8 4 565372 1191.07 2003 2014 473.0
B 12 52 165408 345.45 2003 2014 473.0
C 15 241 279902 546.21 1824 1884 509.0
C 9 54 197929 385.16 1824 1884 509.0
C 9 52 105249 203.08 1824 1884 509.0
D 13 169 6655016 12397.06 1737 1794 536.7
D 10 84 488745 907.34 1737 1794 536.7
D 12 22 73255 133.15 1737 1794 536.7

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