ASTROSAT CZTI

Data Quality Report

Orbit 37983

Creation date: 2024-06-27T21:46:57.545196
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/AS1A11_082T01_9000005356_37983cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_37983cztM0_level2_quad_clean.evt
Size (bytes)609,344,64044,988,480
Size581.1 MB 42.9 MB
Events in quadrant A13,219,7025,775
Events in quadrant B3,322,599337,060
Events in quadrant C2,790,572343,808
Events in quadrant D2,818,606311,692

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0428673
B0129732
C0110922
D0114552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5190506597.591522%
B51901933.718690%
C519060.115607%
D5190450.867052%

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 7193 5190 4719 4719 65.61% 90.92%
B 7193 5191 121 121 1.68% 2.33%
C 7193 5191 2 2 0.03% 0.04%
D 7193 5191 29 29 0.40% 0.56%

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 15 222 11919122 203993.23 288 283 58.4
A 10 83 159217 2720.19 288 283 58.4
A 12 16 14769 247.93 288 283 58.4
B 5 184 464163 3896.09 640 626 119.0
B 5 172 183224 1534.76 640 626 119.0
B 0 189 52540 436.34 640 626 119.0
C 15 214 224158 1534.85 643 650 145.6
C 14 254 36187 244.04 643 650 145.6
C 0 10 8614 54.69 643 650 145.6
D 2 249 63884 409.95 639 621 154.3
D 10 199 55580 356.14 639 621 154.3
D 13 249 51013 326.55 639 621 154.3

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