ASTROSAT CZTI

Data Quality Report

Orbit 25865

Creation date: 2024-06-27T19:22:14.090088
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/AS1A07_068T01_9000003756_25865cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25865cztM0_level2_quad_clean.evt
Size (bytes)652,305,600109,987,200
Size622.1 MB 104.9 MB
Events in quadrant A6,871,770710,084
Events in quadrant B3,580,773765,193
Events in quadrant C3,401,289714,858
Events in quadrant D5,472,294697,806

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246910
B0147360
C0141980
D0204800

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6345109417.241923%
B63451382.174941%
C63451372.159180%
D63456189.739953%

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 7580 6346 703 703 9.27% 11.08%
B 7580 6346 32 32 0.42% 0.50%
C 7580 6346 4 4 0.05% 0.06%
D 7580 6346 553 553 7.30% 8.71%

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 0 13 3673110 22363.71 829 816 164.2
A 13 254 9172 50.89 829 816 164.2
A 0 226 7127 38.43 829 816 164.2
B 10 245 174993 1100.65 845 826 158.2
B 0 219 52903 329.1 845 826 158.2
B 10 247 23700 144.55 845 826 158.2
C 14 238 132186 707.27 806 811 185.7
C 7 238 69605 370.36 806 811 185.7
C 3 233 52348 277.45 806 811 185.7
D 1 52 2276306 11615.97 821 802 195.9
D 2 234 25516 126.16 821 802 195.9
D 12 233 25398 125.55 821 802 195.9

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