ASTROSAT CZTI

Data Quality Report

Orbit 04442

Creation date: 2024-06-27T14:42:08.101264
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_245T01_9000000554_04442cztM0_level2.evt modeM0/AS1G05_245T01_9000000554_04442cztM0_level2_quad_clean.evt
Size (bytes)928,440,000173,419,200
Size885.4 MB 165.4 MB
Events in quadrant A6,789,3081,085,472
Events in quadrant B6,860,9441,093,884
Events in quadrant C6,569,2911,063,163
Events in quadrant D6,916,6381,009,265

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02960
B02960
C02960
D02960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0299472
B0298792
C0296402
D0311022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14491860.593472%
B14491930.641778%
C14491450.310538%
D144911521.048927%

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 17913 14495 13 13 0.07% 0.09%
B 17913 14495 1 1 0.01% 0.01%
C 17913 14495 1 1 0.01% 0.01%
D 17913 14495 102 102 0.57% 0.70%

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 13 68531 193.15 1723 1693 346.0
A 0 50 43263 120.13 1723 1693 346.0
A 8 15 41253 114.32 1723 1693 346.0
B 14 167 84645 251.66 1740 1707 329.6
B 12 111 30553 87.53 1740 1707 329.6
B 15 204 25674 72.72 1740 1707 329.6
C 9 16 48051 121.1 1666 1685 382.9
C 9 247 14716 34.03 1666 1685 382.9
C 13 61 13500 30.86 1666 1685 382.9
D 2 63 203714 476.64 1633 1602 424.0
D 2 31 158080 369.02 1633 1602 424.0
D 8 112 82460 190.69 1633 1602 424.0

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