ASTROSAT CZTI

Data Quality Report

Orbit 41667

Creation date: 2024-06-27T22:31:19.881616
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/AS1T05_116T01_9000005682_41667cztM0_level2.fits modeM0/AS1T05_116T01_9000005682_41667cztM0_level2_quad_clean.evt
Size (bytes)73,837,44018,944,640
Size70.4 MB 18.1 MB
Events in quadrant A641,059127,423
Events in quadrant B579,033126,338
Events in quadrant C779,016115,167
Events in quadrant D639,249115,704

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A027001
B026231
C031061
D027761

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A118040.338983%
B1180332.796610%
C11801018.559322%
D1180231.949153%

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 1180 1180 2 2 0.17% 0.17%
B 1180 1180 26 26 2.20% 2.20%
C 1180 1180 101 101 8.56% 8.56%
D 1180 1180 18 18 1.53% 1.53%

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 10 83 174175 6618.91 119 117 26.3
A 13 6 2118 76.09 119 117 26.3
A 10 67 2061 73.92 119 117 26.3
B 4 141 96580 3973.85 118 114 24.3
B 0 190 7632 309.7 118 114 24.3
B 0 245 7502 304.34 118 114 24.3
C 0 10 274108 9677.56 114 114 28.3
C 15 214 49682 1750.76 114 114 28.3
C 14 17 8799 306.76 114 114 28.3
D 13 249 126386 4066.75 118 115 31.0
D 2 249 30654 983.55 118 115 31.0
D 10 199 6491 205.35 118 115 31.0

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