ASTROSAT CZTI

Data Quality Report

Orbit 21489

Creation date: 2024-06-27T18:28:31.519719
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/AS1T03_141T01_9000003174_21489cztM0_level2.evt modeM0/AS1T03_141T01_9000003174_21489cztM0_level2_quad_clean.evt
Size (bytes)491,068,80099,002,880
Size468.3 MB 94.4 MB
Events in quadrant A3,450,941623,661
Events in quadrant B3,613,355638,811
Events in quadrant C3,508,917616,543
Events in quadrant D3,793,094601,257

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150910
B0153800
C0150850
D0164550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7445250.335796%
B7445420.564137%
C7446430.577491%
D7446931.248993%

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 9185 7446 0 0 0.00% 0.00%
B 9185 7445 12 12 0.13% 0.16%
C 9186 7446 0 0 0.00% 0.00%
D 9186 7448 71 71 0.77% 0.95%

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 11566 59.53 894 875 179.6
A 0 226 7677 37.88 894 875 179.6
A 3 137 7476 36.76 894 875 179.6
B 3 64 39364 222.68 897 874 172.8
B 0 230 33500 188.75 897 874 172.8
B 12 111 20656 114.45 897 874 172.8
C 14 238 136021 670.75 859 865 201.5
C 3 233 11736 53.95 859 865 201.5
C 0 239 11389 52.23 859 865 201.5
D 7 38 303994 1437.24 863 837 210.9
D 1 52 69068 323.48 863 837 210.9
D 13 153 62228 291.05 863 837 210.9

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