ASTROSAT CZTI

Data Quality Report

Orbit 23574

Creation date: 2024-06-27T18:56:18.716843
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/AS1A07_011T01_9000003482_23574cztM0_level2.evt modeM0/AS1A07_011T01_9000003482_23574cztM0_level2_quad_clean.evt
Size (bytes)1,744,355,520351,054,720
Size1.6 GB 334.8 MB
Events in quadrant A11,579,6872,256,682
Events in quadrant B12,520,1172,279,844
Events in quadrant C12,073,6122,205,402
Events in quadrant D14,955,0132,160,972

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0301
B0312
C0302
D0301

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05160
B05160
C05160
D05171

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A051691307
B053968301
C052706302
D062483481

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A251402380.946698%
B251443631.443684%
C251514521.797145%
D251307753.083963%

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 28508 25203 2 2 0.01% 0.01%
B 28501 25203 61 61 0.21% 0.24%
C 28499 25200 66 66 0.23% 0.26%
D 28507 25183 455 455 1.60% 1.81%

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 13 254 44302 69.02 2991 2922 599.5
A 3 137 27146 40.41 2991 2922 599.5
A 0 226 25718 38.02 2991 2922 599.5
B 0 189 358501 633.63 2971 2901 561.2
B 4 216 185079 324.62 2971 2901 561.2
B 0 230 77034 132.1 2971 2901 561.2
C 14 238 451575 677.66 2852 2863 662.1
C 0 10 291821 436.39 2852 2863 662.1
C 10 9 150949 223.64 2852 2863 662.1
D 1 52 2112248 3028.37 2869 2787 696.6
D 7 38 686911 982.14 2869 2787 696.6
D 12 233 502794 717.82 2869 2787 696.6

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