ASTROSAT CZTI

Data Quality Report

Orbit 04973

Creation date: 2024-06-27T14:49:35.336645
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_158T01_9000000630_04973cztM0_level2.evt modeM0/AS1G05_158T01_9000000630_04973cztM0_level2_quad_clean.evt
Size (bytes)2,483,619,840364,754,880
Size2.3 GB 347.9 MB
Events in quadrant A16,305,1352,198,218
Events in quadrant B17,270,0472,203,667
Events in quadrant C15,384,8002,213,555
Events in quadrant D23,901,9232,034,924

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0731617
B0745356
C0710146
D0964216

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07080
B07080
C07080
D07080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A348862510.719486%
B348862280.653557%
C34886620.177722%
D3488621706.220260%

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 37901 34889 92 92 0.24% 0.26%
B 37901 34889 50 50 0.13% 0.14%
C 37901 34890 3 3 0.01% 0.01%
D 37901 34888 1804 1804 4.76% 5.17%

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 50 601561 733.29 4008 3918 815.0
A 13 251 136180 162.28 4008 3918 815.0
A 14 111 122905 145.99 4008 3918 815.0
B 15 204 904143 1173.52 4060 3965 767.1
B 14 167 218142 279.21 4060 3965 767.1
B 0 219 133260 168.56 4060 3965 767.1
C 1 16 125500 134.63 3896 3910 903.1
C 13 61 32493 31.65 3896 3910 903.1
C 8 128 20222 18.06 3896 3910 903.1
D 12 227 2687047 2890.69 3783 3669 928.3
D 2 33 2436882 2621.2 3783 3669 928.3
D 2 136 1559169 1675.68 3783 3669 928.3

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