ASTROSAT CZTI

Data Quality Report

Orbit 44179

Creation date: 2024-06-27T23:00:13.355171
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/AS1A13_074T05_9000005958_44179cztM0_level2.fits modeM0/AS1A13_074T05_9000005958_44179cztM0_level2_quad_clean.evt
Size (bytes)226,376,64046,391,040
Size215.9 MB 44.2 MB
Events in quadrant A2,946,450293,121
Events in quadrant B1,671,127325,311
Events in quadrant C1,490,008309,993
Events in quadrant D2,048,151271,765

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0635
B0633
C0644
D0644

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120131165
B07577640
C06896709
D08754634

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B091
C090
D081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A285028810.105263%
B2869220.766818%
C286190.314575%
D28691856.448240%

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 4192 2885 184 184 4.39% 6.38%
B 4200 2900 4 4 0.10% 0.14%
C 4202 2888 9 9 0.21% 0.31%
D 4191 2899 120 120 2.86% 4.14%

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 15 223 1141637 17243.6 310 302 66.2
A 10 83 596845 9012.73 310 302 66.2
A 2 79 6572 94.73 310 302 66.2
B 0 200 238769 3673.02 322 312 64.9
B 0 219 91067 1397.92 322 312 64.9
B 0 230 27736 422.42 322 312 64.9
C 9 54 147648 1949.03 317 319 75.6
C 14 254 74681 983.74 317 319 75.6
C 3 233 19624 255.39 317 319 75.6
D 13 249 454960 5650.29 310 300 80.5
D 1 47 127946 1586.32 310 300 80.5
D 1 52 105616 1308.82 310 300 80.5

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