ASTROSAT CZTI

Data Quality Report

Orbit 00881

Creation date: 2024-06-27T14:04:13.057771
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/AS1P01_889T01_9000000150_00881cztM0_level2.evt modeM0/AS1P01_889T01_9000000150_00881cztM0_level2_quad_clean.evt
Size (bytes)271,791,36031,806,720
Size259.2 MB 30.3 MB
Events in quadrant A2,044,908206,579
Events in quadrant B2,281,461204,271
Events in quadrant C1,917,878203,843
Events in quadrant D1,847,997199,848

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A075330
B082090
C071610
D069830

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A204400.000000%
B204450.244618%
C204400.000000%
D204430.146771%

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 2044 2044 6 6 0.29% 0.29%
B 2044 2044 37 37 1.81% 1.81%
C 2044 2044 6 6 0.29% 0.29%
D 2044 2044 7 7 0.34% 0.34%

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 14 79 7396 53.32 531 535 128.7
A 14 170 2025 11.58 531 535 128.7
A 3 111 1502 7.51 531 535 128.7
B 8 38 107009 829.02 551 557 128.4
B 0 220 51720 398.44 551 557 128.4
B 5 200 11565 85.73 551 557 128.4
C 3 79 10544 75.82 479 494 132.5
C 3 111 9983 71.59 479 494 132.5
C 15 241 5709 39.34 479 494 132.5
D 11 131 53784 374.66 462 478 142.3
D 1 4 35946 249.29 462 478 142.3
D 2 16 13232 89.64 462 478 142.3

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