ASTROSAT CZTI

Data Quality Report

Orbit 55102

Creation date: 2025-12-04T19:07:24.150838
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/AS1A14_025T01_9000006530_55102cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55102cztM0_level2_quad_clean.evt
Size (bytes)442,252,800112,124,160
Size421.8 MB 106.9 MB
Events in quadrant A3,306,206730,907
Events in quadrant B3,477,395789,978
Events in quadrant C3,912,962688,116
Events in quadrant D5,060,420637,834

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159270
B0161700
C0175850
D0205191

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A788850.063387%
B7888110.139452%
C78881111.407201%
D78872853.613541%

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 7888 7888 2 2 0.03% 0.03%
B 7888 7888 5 5 0.06% 0.06%
C 7888 7888 88 88 1.12% 1.12%
D 7887 7887 255 255 3.23% 3.23%

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 7 190 30288 142.98 831 809 206.2
A 4 3 28112 132.42 831 809 206.2
A 13 254 15727 72.35 831 809 206.2
B 4 21 59542 330.27 819 789 177.9
B 10 245 42659 235.36 819 789 177.9
B 5 185 40869 225.3 819 789 177.9
C 13 3 453993 2069.23 798 791 219.0
C 12 250 109246 495.18 798 791 219.0
C 6 223 104715 474.5 798 791 219.0
D 6 239 881059 3966.04 791 759 222.0
D 2 249 249311 1119.81 791 759 222.0
D 7 96 237253 1065.48 791 759 222.0

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