ASTROSAT CZTI

Data Quality Report

Orbit 04867

Creation date: 2024-06-27T14:48:14.266243
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/AS1G05_009T02_9000000618_04867cztM0_level2.evt modeM0/AS1G05_009T02_9000000618_04867cztM0_level2_quad_clean.evt
Size (bytes)513,144,00086,518,080
Size489.4 MB 82.5 MB
Events in quadrant A3,484,828531,743
Events in quadrant B4,142,666531,116
Events in quadrant C3,419,619527,458
Events in quadrant D3,982,408506,113

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158083
B0174772
C0156762
D0174802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7525490.651163%
B75251251.661130%
C7525570.757475%
D75252012.671096%

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 7800 7527 8 8 0.10% 0.11%
B 7800 7527 42 42 0.54% 0.56%
C 7800 7527 11 11 0.14% 0.15%
D 7800 7527 77 77 0.99% 1.02%

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 13 251 90696 505.13 864 844 177.9
A 8 15 35776 196.38 864 844 177.9
A 0 50 24543 133.23 864 844 177.9
B 10 16 521015 3062.08 876 856 169.9
B 15 204 90699 528.89 876 856 169.9
B 4 80 77268 449.82 876 856 169.9
C 9 247 42335 207.99 847 848 199.5
C 1 16 39260 192.58 847 848 199.5
C 8 128 16445 78.19 847 848 199.5
D 2 136 287241 1382.17 835 808 207.2
D 2 63 200313 962.7 835 808 207.2
D 2 234 152103 730.07 835 808 207.2

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