ASTROSAT CZTI

Data Quality Report

Orbit 37666

Creation date: 2024-06-27T21:42:51.671708
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/AS1A11_075T01_9000005342_37666cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37666cztM0_level2_quad_clean.evt
Size (bytes)380,473,92099,835,200
Size362.8 MB 95.2 MB
Events in quadrant A2,879,873661,883
Events in quadrant B2,596,733686,113
Events in quadrant C2,730,889687,717
Events in quadrant D2,983,829646,075

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117083
B0107392
C0109782
D0120622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4877521.066229%
B4877380.779168%
C4877521.066229%
D4877571.168751%

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 7029 4878 33 33 0.47% 0.68%
B 7028 4876 29 29 0.41% 0.59%
C 7028 4876 40 40 0.57% 0.82%
D 7028 4876 41 41 0.58% 0.84%

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 301684 2517.56 596 585 119.6
A 9 143 176068 1467.25 596 585 119.6
A 15 222 60072 497.38 596 585 119.6
B 5 172 68429 600.12 602 587 113.0
B 4 81 34027 295.8 602 587 113.0
B 15 85 33900 294.68 602 587 113.0
C 15 214 224115 1619.45 600 604 138.0
C 0 10 140939 1016.8 600 604 138.0
C 14 254 19097 133.99 600 604 138.0
D 12 227 233175 1627.56 593 579 142.9
D 2 249 108344 754.07 593 579 142.9
D 1 47 89049 619.06 593 579 142.9

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