ASTROSAT CZTI

Data Quality Report

Orbit 22657

Creation date: 2024-06-27T18:44:08.446896
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_22657cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22657cztM0_level2_quad_clean.evt
Size (bytes)556,902,720100,699,200
Size531.1 MB 96.0 MB
Events in quadrant A3,722,199644,238
Events in quadrant B4,193,869642,113
Events in quadrant C3,752,436617,621
Events in quadrant D4,672,022607,304

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161762
B0173662
C0161532
D0191112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77451001.291156%
B77462082.685257%
C77461271.639556%
D77461612.078492%

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 8560 7747 0 0 0.00% 0.00%
B 8561 7748 31 31 0.36% 0.40%
C 8561 7748 3 3 0.04% 0.04%
D 8561 7748 70 70 0.82% 0.90%

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 3 1 23111 114.55 955 933 193.6
A 4 2 16695 81.41 955 933 193.6
A 13 254 14656 70.88 955 933 193.6
B 0 229 101422 554.18 950 925 181.3
B 0 230 98472 537.91 950 925 181.3
B 0 190 77553 422.55 950 925 181.3
C 14 238 142067 662.21 910 914 213.2
C 10 22 38584 176.73 910 914 213.2
C 10 23 10589 45.39 910 914 213.2
D 1 52 759956 3400.01 919 889 223.3
D 12 233 157269 700.46 919 889 223.3
D 2 136 74245 328.58 919 889 223.3

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