ASTROSAT CZTI

Data Quality Report

Orbit 24100

Creation date: 2024-06-27T19:02:09.433904
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_027T15_9000003562_24100cztM0_level2.evt modeM0/AS1A07_027T15_9000003562_24100cztM0_level2_quad_clean.evt
Size (bytes)561,265,92084,150,720
Size535.3 MB 80.3 MB
Events in quadrant A3,694,199534,536
Events in quadrant B3,652,230539,202
Events in quadrant C3,682,107512,647
Events in quadrant D5,528,762507,778

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149222
B0146832
C0148282
D0213002

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6510821.259601%
B6510811.244240%
C65101041.597542%
D65103505.376344%

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 7815 6510 1 1 0.01% 0.02%
B 7815 6511 0 0 0.00% 0.00%
C 7815 6510 0 0 0.00% 0.00%
D 7814 6509 247 247 3.16% 3.79%

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 2 250 23859 122.95 948 931 186.5
A 6 16 16182 81.78 948 931 186.5
A 13 254 10944 53.69 948 931 186.5
B 0 190 26278 146.32 925 904 173.4
B 12 111 19690 108.33 925 904 173.4
B 11 111 17606 96.31 925 904 173.4
C 14 238 145218 700.63 891 899 206.0
C 0 239 56057 267.78 891 899 206.0
C 7 247 9641 42.44 891 899 206.0
D 8 195 1493948 6927.29 906 884 215.5
D 12 233 507212 2349.18 906 884 215.5
D 1 52 74545 341.76 906 884 215.5

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