ASTROSAT CZTI

Data Quality Report

Orbit 37098

Creation date: 2024-06-27T21:35:30.378185
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/AS1A09_138T04_9000005282_37098cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37098cztM0_level2_quad_clean.evt
Size (bytes)1,777,066,560274,469,760
Size1.7 GB 261.8 MB
Events in quadrant A12,620,5271,690,302
Events in quadrant B12,743,6721,707,722
Events in quadrant C12,012,8391,680,110
Events in quadrant D14,826,1811,587,645

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04880
B04880
C04880
D04880

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0522816
B0535915
C0499105
D0599465

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A239411970.822856%
B239414241.771020%
C23941710.296562%
D239415732.393384%

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 31767 23946 142 142 0.45% 0.59%
B 31767 23946 284 284 0.89% 1.19%
C 31767 23946 60 60 0.19% 0.25%
D 31767 23946 547 547 1.72% 2.28%

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 950853 1720.72 2778 2727 551.0
A 7 3 465864 840.53 2778 2727 551.0
A 15 237 266308 478.36 2778 2727 551.0
B 5 172 967047 1852.76 2734 2663 520.5
B 5 255 267040 507.92 2734 2663 520.5
B 0 229 216057 409.97 2734 2663 520.5
C 15 214 1011392 1630.45 2687 2706 618.7
C 0 10 304949 488.55 2687 2706 618.7
C 0 207 154245 244.95 2687 2706 618.7
D 1 47 1069165 1641.98 2698 2628 649.5
D 13 249 953718 1464.24 2698 2628 649.5
D 1 52 709294 1087.94 2698 2628 649.5

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