ASTROSAT CZTI

Data Quality Report

Orbit 48291

Creation date: 2024-09-06T11:06:51.977179
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/AS1A13_029T01_9000006422_48291cztM0_level2.fits modeM0/AS1A13_029T01_9000006422_48291cztM0_level2_quad_clean.evt
Size (bytes)581,160,960122,918,400
Size554.2 MB 117.2 MB
Events in quadrant A8,005,210815,584
Events in quadrant B3,956,686854,400
Events in quadrant C3,615,557813,202
Events in quadrant D5,338,234702,701

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290700
B0171161
C0163430
D0214000

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77053784.905905%
B77041341.739356%
C7704440.571132%
D77045286.853583%

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 7705 7705 13 13 0.17% 0.17%
B 7704 7704 4 4 0.05% 0.05%
C 7704 7704 24 24 0.31% 0.31%
D 7704 7704 401 401 5.21% 5.21%

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 4474195 24080.93 889 869 185.8
A 4 2 29871 156.12 889 869 185.8
A 13 248 29438 153.79 889 869 185.8
B 0 200 247102 1396.97 891 862 176.3
B 4 21 133731 753.79 891 862 176.3
B 0 186 23211 126.79 891 862 176.3
C 0 207 96046 462.33 873 876 205.8
C 12 2 56211 268.81 873 876 205.8
C 14 254 46665 222.44 873 876 205.8
D 2 165 1167028 5438.32 849 821 214.4
D 2 249 345055 1605.25 849 821 214.4
D 13 29 190241 883.31 849 821 214.4

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