ASTROSAT CZTI

Data Quality Report

Orbit 04379

Creation date: 2024-06-27T14:41:08.198067
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/AS1G05_252T01_9000000544_04379cztM0_level2.evt modeM0/AS1G05_252T01_9000000544_04379cztM0_level2_quad_clean.evt
Size (bytes)1,222,911,360189,933,120
Size1.1 GB 181.1 MB
Events in quadrant A8,379,5301,163,118
Events in quadrant B8,913,3281,145,834
Events in quadrant C8,752,9841,129,145
Events in quadrant D9,790,5001,090,829

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03691331
B03838638
C03824539
D04197835

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03620
B03620
C03620
D03620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A177431070.603055%
B177442541.431470%
C177401340.755355%
D177454822.716258%

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 19066 17752 10 10 0.05% 0.06%
B 19066 17754 160 160 0.84% 0.90%
C 19066 17758 80 80 0.42% 0.45%
D 19066 17757 373 373 1.96% 2.10%

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 13 251 272850 642.91 2064 2017 421.3
A 14 111 70382 162.29 2064 2017 421.3
A 13 14 27719 61.01 2064 2017 421.3
B 14 167 666792 1666.07 2075 2024 399.0
B 15 204 105894 260.32 2075 2024 399.0
B 8 3 39949 95.05 2075 2024 399.0
C 14 48 596469 1284.49 1985 1993 462.8
C 9 247 231419 495.72 1985 1993 462.8
C 9 16 62904 131.61 1985 1993 462.8
D 9 35 984102 2073.88 1964 1907 473.6
D 2 136 725157 1527.13 1964 1907 473.6
D 2 14 88885 183.65 1964 1907 473.6

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