ASTROSAT CZTI

Data Quality Report

Orbit 13900

Creation date: 2024-06-27T16:47:38.434433
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/AS1A04_010T02_9000002048_13900cztM0_level2.evt modeM0/AS1A04_010T02_9000002048_13900cztM0_level2_quad_clean.evt
Size (bytes)634,343,04096,713,280
Size605.0 MB 92.2 MB
Events in quadrant A4,621,129588,753
Events in quadrant B4,178,465593,627
Events in quadrant C4,136,949597,167
Events in quadrant D5,699,744560,019

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193483
B0179802
C0179652
D0227782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A84734415.204768%
B84733874.567450%
C84732202.596483%
D84735356.314174%

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 8849 8474 80 80 0.90% 0.94%
B 8849 8474 4 4 0.05% 0.05%
C 8849 8474 0 0 0.00% 0.00%
D 8849 8474 309 309 3.49% 3.65%

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 9 143 386570 1782.75 1050 1026 216.3
A 8 15 155222 713.0 1050 1026 216.3
A 1 162 24675 109.35 1050 1026 216.3
B 12 111 25736 119.52 1048 1018 206.8
B 4 80 23090 106.72 1048 1018 206.8
B 11 111 21711 100.06 1048 1018 206.8
C 3 233 105784 428.05 1032 1035 244.7
C 13 61 7156 25.01 1032 1035 244.7
C 8 128 4668 14.85 1032 1035 244.7
D 1 52 974300 4026.02 1006 981 241.8
D 13 122 548165 2263.36 1006 981 241.8
D 5 222 149196 613.07 1006 981 241.8

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