ASTROSAT CZTI

Data Quality Report

Orbit 08124

Creation date: 2024-06-27T15:28:20.543783
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/AS1A02_178T01_9000001118_08124cztM0_level2.evt modeM0/AS1A02_178T01_9000001118_08124cztM0_level2_quad_clean.evt
Size (bytes)605,203,200116,642,880
Size577.2 MB 111.2 MB
Events in quadrant A4,006,206741,872
Events in quadrant B4,338,286758,843
Events in quadrant C4,020,047746,199
Events in quadrant D5,380,529688,218

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178923
B0187802
C0179012
D0220302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8606941.092261%
B86061772.056705%
C8606901.045782%
D86065226.065536%

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 9191 8608 1 1 0.01% 0.01%
B 9191 8608 37 37 0.40% 0.43%
C 9191 8608 0 0 0.00% 0.00%
D 9191 8607 296 296 3.22% 3.44%

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 8 15 18465 81.16 1035 1009 215.1
A 0 226 9761 40.69 1035 1009 215.1
A 12 194 9420 39.1 1035 1009 215.1
B 10 16 207110 1020.09 1044 1017 202.0
B 0 214 74197 362.22 1044 1017 202.0
B 12 111 22703 107.34 1044 1017 202.0
C 1 16 36054 146.64 1021 1024 238.9
C 13 61 7622 27.62 1021 1024 238.9
C 12 4 3556 10.6 1021 1024 238.9
D 12 221 1294149 5046.21 983 958 256.3
D 1 52 104651 404.62 983 958 256.3
D 13 169 101966 394.15 983 958 256.3

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