ASTROSAT CZTI

Data Quality Report

Orbit 25391

Creation date: 2024-06-27T19:17:08.993928
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/AS1A09_057T04_9000003712_25391cztM0_level2.evt modeM0/AS1A09_057T04_9000003712_25391cztM0_level2_quad_clean.evt
Size (bytes)743,345,28077,613,120
Size708.9 MB 74.0 MB
Events in quadrant A7,399,672467,042
Events in quadrant B3,576,452495,516
Events in quadrant C3,462,572464,537
Events in quadrant D7,613,966448,852

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0263710
B0144760
C0142100
D0277430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6799174325.636123%
B68001081.588235%
C68001181.735294%
D6799114316.811296%

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 7799 6799 1555 1555 19.94% 22.87%
B 7800 6800 4 4 0.05% 0.06%
C 7800 6800 0 0 0.00% 0.00%
D 7798 6798 895 895 11.48% 13.17%

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 6 16 4062043 24079.29 850 833 168.7
A 15 173 54638 319.01 850 833 168.7
A 13 254 8942 48.08 850 833 168.7
B 0 190 48568 287.18 884 863 166.1
B 15 32 27335 159.36 884 863 166.1
B 12 111 20014 115.29 884 863 166.1
C 14 238 136815 694.2 849 858 195.8
C 3 233 11829 56.02 849 858 195.8
C 7 247 8370 38.36 849 858 195.8
D 1 52 2308779 11943.31 809 786 193.2
D 8 195 1476620 7637.09 809 786 193.2
D 7 238 751678 3885.69 809 786 193.2

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