ASTROSAT CZTI

Data Quality Report

Orbit 13798

Creation date: 2024-06-27T16:46:15.876506
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_199T01_9000002040_13798cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13798cztM0_level2_quad_clean.evt
Size (bytes)615,804,48086,325,120
Size587.3 MB 82.3 MB
Events in quadrant A3,941,784518,421
Events in quadrant B4,143,334527,478
Events in quadrant C4,003,762514,294
Events in quadrant D6,009,835489,598

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170954
B0175173
C0171423
D0232253

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A81124845.966469%
B81125486.755424%
C81123644.487179%
D81124865.991124%

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 8693 8114 0 0 0.00% 0.00%
B 8693 8116 14 14 0.16% 0.17%
C 8693 8116 0 0 0.00% 0.00%
D 8693 8116 87 87 1.00% 1.07%

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 1 162 15431 68.32 1015 987 211.4
A 8 15 13487 59.12 1015 987 211.4
A 0 226 8971 37.76 1015 987 211.4
B 4 80 55690 277.52 1014 985 197.1
B 8 250 53803 267.95 1014 985 197.1
B 0 219 47110 233.99 1014 985 197.1
C 3 233 108477 463.38 996 999 231.9
C 13 61 7234 26.88 996 999 231.9
C 14 234 5887 21.07 996 999 231.9
D 10 157 1244110 5139.85 983 956 241.9
D 1 52 885353 3656.56 983 956 241.9
D 10 172 123122 505.1 983 956 241.9

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