ASTROSAT CZTI

Data Quality Report

Orbit 44164

Creation date: 2024-06-27T22:59:57.953341
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_079T01_9000005956_44164cztM0_level2.fits modeM0/AS1A13_079T01_9000005956_44164cztM0_level2_quad_clean.evt
Size (bytes)250,974,72042,865,920
Size239.3 MB 40.9 MB
Events in quadrant A4,036,307207,965
Events in quadrant B1,683,333310,807
Events in quadrant C1,396,624303,952
Events in quadrant D1,948,759270,064

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155
B0100
C0100
D0155

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159951957
B07818940
C06845576
D087321003

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0673
B07410
C0705
D07010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A282399035.069075%
B28781053.648367%
C2909742.543829%
D28691575.472290%

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 5365 2924 610 610 11.37% 20.86%
B 5355 2951 6 6 0.11% 0.20%
C 5362 2982 12 12 0.22% 0.40%
D 5363 2944 63 63 1.17% 2.14%

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 2320642 37187.28 291 284 62.4
A 10 83 547498 8769.94 291 284 62.4
A 7 3 19607 309.68 291 284 62.4
B 0 219 184706 2694.48 331 321 68.4
B 0 230 133875 1951.67 331 321 68.4
B 5 255 18139 260.38 331 321 68.4
C 14 254 102676 1286.77 330 332 79.5
C 8 13 3733 42.76 330 332 79.5
C 13 61 2065 21.79 330 332 79.5
D 13 249 193490 2317.59 323 312 83.4
D 12 16 162058 1940.5 323 312 83.4
D 1 47 69396 828.81 323 312 83.4

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