ASTROSAT CZTI

Data Quality Report

Orbit 11583

Creation date: 2024-06-27T16:15:28.868609
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/AS1A04_137T01_9000001700_11583cztM0_level2.evt modeM0/AS1A04_137T01_9000001700_11583cztM0_level2_quad_clean.evt
Size (bytes)224,303,04035,294,400
Size213.9 MB 33.7 MB
Events in quadrant A1,826,866231,763
Events in quadrant B1,370,170235,073
Events in quadrant C923,852247,919
Events in quadrant D2,538,926212,325

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068291
B052991
C040741
D089121

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A194019910.257732%
B19401588.144330%
C194060.309278%
D194044422.886598%

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 1941 1941 86 86 4.43% 4.43%
B 1941 1941 58 58 2.99% 2.99%
C 1941 1941 1 1 0.05% 0.05%
D 1941 1941 391 391 20.14% 20.14%

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 8 5 688087 13536.29 236 230 50.8
A 9 143 83809 1644.74 236 230 50.8
A 1 162 37761 738.57 236 230 50.8
B 4 239 335265 7100.47 232 226 47.2
B 15 204 87638 1852.52 232 226 47.2
B 11 51 17907 374.71 232 226 47.2
C 0 207 10715 188.04 231 232 55.8
C 8 128 4099 69.36 231 232 55.8
C 14 234 3740 62.92 231 232 55.8
D 2 33 783749 14309.7 220 214 54.8
D 1 52 406667 7423.05 220 214 54.8
D 10 253 311894 5692.21 220 214 54.8

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