ASTROSAT CZTI

Data Quality Report

Orbit 17867

Creation date: 2024-06-27T17:41:51.503739
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/AS1A05_085T01_9000002658_17867cztM0_level2.evt modeM0/AS1A05_085T01_9000002658_17867cztM0_level2_quad_clean.evt
Size (bytes)499,458,24083,275,200
Size476.3 MB 79.4 MB
Events in quadrant A3,544,101505,749
Events in quadrant B3,615,296509,295
Events in quadrant C3,673,049489,264
Events in quadrant D3,773,627485,055

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158392
B0158342
C0158542
D0165652

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76381572.055512%
B76381832.395915%
C76382122.775596%
D76381772.317361%

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 8093 7640 0 0 0.00% 0.00%
B 8093 7639 0 0 0.00% 0.00%
C 8093 7639 0 0 0.00% 0.00%
D 8093 7639 29 29 0.36% 0.38%

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 15 174 13045 64.16 919 897 189.3
A 0 226 7814 36.53 919 897 189.3
A 3 137 7242 33.51 919 897 189.3
B 12 111 22154 117.62 920 894 180.7
B 11 111 19371 102.23 920 894 180.7
B 14 111 16759 87.78 920 894 180.7
C 14 238 135248 640.59 888 892 209.7
C 5 218 32603 151.19 888 892 209.7
C 3 233 14309 63.97 888 892 209.7
D 7 238 244733 1104.94 897 869 220.7
D 12 227 42180 187.18 897 869 220.7
D 2 152 35388 156.4 897 869 220.7

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