ASTROSAT CZTI

Data Quality Report

Orbit 25461

Creation date: 2024-06-27T19:17:55.082392
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/AS1A09_085T02_9000003716_25461cztM0_level2.evt modeM0/AS1A09_085T02_9000003716_25461cztM0_level2_quad_clean.evt
Size (bytes)530,544,960112,648,320
Size506.0 MB 107.4 MB
Events in quadrant A4,303,199756,085
Events in quadrant B3,540,361765,051
Events in quadrant C3,548,155736,905
Events in quadrant D4,253,639718,627

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171700
B0145290
C0146840
D0167710

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62291091.749880%
B62291151.846203%
C62291722.761278%
D62292413.869000%

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 7570 6231 26 26 0.34% 0.42%
B 7570 6231 15 15 0.20% 0.24%
C 7570 6231 5 5 0.07% 0.08%
D 7570 6231 171 171 2.26% 2.74%

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 6 16 811589 4532.34 905 892 178.9
A 13 254 10219 52.14 905 892 178.9
A 0 226 7972 39.58 905 892 178.9
B 0 245 48396 292.85 881 865 162.3
B 15 32 31330 187.7 881 865 162.3
B 0 190 23655 140.41 881 865 162.3
C 14 238 140190 709.79 864 872 196.3
C 9 54 37764 187.95 864 872 196.3
C 13 61 5971 25.98 864 872 196.3
D 1 52 758328 3643.95 878 857 207.9
D 12 233 83260 396.41 878 857 207.9
D 8 195 80801 384.59 878 857 207.9

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