ASTROSAT CZTI

Data Quality Report

Orbit 41273

Creation date: 2024-06-27T22:26:51.342617
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/AS1A12_052T04_9000005638_41273cztM0_level2.fits modeM0/AS1A12_052T04_9000005638_41273cztM0_level2_quad_clean.evt
Size (bytes)292,282,56085,775,040
Size278.7 MB 81.8 MB
Events in quadrant A2,673,497579,448
Events in quadrant B2,330,140590,452
Events in quadrant C2,876,369552,374
Events in quadrant D2,557,517531,400

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107413
B099612
C0114792
D0108202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A489380.163499%
B489360.122624%
C48932064.210096%
D4894250.510830%

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 7016 4894 3 3 0.04% 0.06%
B 7016 4894 1 1 0.01% 0.02%
C 7016 4894 204 204 2.91% 4.17%
D 7017 4895 24 24 0.34% 0.49%

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 491448 4368.41 556 544 112.4
A 2 79 17103 147.35 556 544 112.4
A 12 189 10174 85.69 556 544 112.4
B 7 202 116961 1092.12 547 531 106.6
B 5 255 22007 201.45 547 531 106.6
B 0 229 19479 177.73 547 531 106.6
C 0 10 535094 4368.21 531 535 122.4
C 15 214 209043 1703.85 531 535 122.4
C 15 111 51674 417.89 531 535 122.4
D 5 222 188809 1415.77 549 533 133.0
D 1 52 113975 853.04 549 533 133.0
D 2 249 60372 449.97 549 533 133.0

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