ASTROSAT CZTI

Data Quality Report

Orbit 22658

Creation date: 2024-06-27T18:44:09.494501
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/AS1A08_007T01_9000003362_22658cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22658cztM0_level2_quad_clean.evt
Size (bytes)596,779,200110,232,000
Size569.1 MB 105.1 MB
Events in quadrant A3,913,371710,438
Events in quadrant B4,339,030712,564
Events in quadrant C3,941,052682,931
Events in quadrant D5,324,961663,741

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170682
B0182922
C0169692
D0214622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8181640.782300%
B81821682.053288%
C81821131.381080%
D81824325.279883%

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 8686 8183 3 3 0.03% 0.04%
B 8687 8184 9 9 0.10% 0.11%
C 8687 8184 6 6 0.07% 0.07%
D 8687 8184 260 260 2.99% 3.18%

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 14 235 61595 301.8 997 976 200.9
A 13 254 15376 71.69 997 976 200.9
A 0 226 8532 37.62 997 976 200.9
B 0 230 117942 617.33 998 971 189.5
B 0 190 98873 516.69 998 971 189.5
B 0 229 80125 417.75 998 971 189.5
C 14 238 147439 655.71 951 956 223.4
C 10 22 37339 162.86 951 956 223.4
C 10 23 25013 107.69 951 956 223.4
D 1 52 704326 3041.85 949 918 231.2
D 12 33 215754 929.05 949 918 231.2
D 12 233 176513 759.35 949 918 231.2

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