ASTROSAT CZTI

Data Quality Report

Orbit 39684

Creation date: 2024-06-27T22:07:43.617238
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/AS1A12_051T01_9000005490_39684cztM0_level2.fits modeM0/AS1A12_051T01_9000005490_39684cztM0_level2_quad_clean.evt
Size (bytes)687,816,00084,862,080
Size656.0 MB 80.9 MB
Events in quadrant A11,319,983373,023
Events in quadrant B3,025,257682,342
Events in quadrant C7,441,481497,474
Events in quadrant D3,201,055590,307

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0377583
B0131362
C0262322
D0139142

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6099320452.533202%
B6099240.393507%
C6099159826.201017%
D60991041.705198%

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 8724 6101 2739 2739 31.40% 44.89%
B 8724 6101 11 11 0.13% 0.18%
C 8724 6101 1186 1186 13.59% 19.44%
D 8724 6101 93 93 1.07% 1.52%

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 15 222 7068443 63923.08 539 527 110.6
A 15 174 1593464 14406.71 539 527 110.6
A 10 83 410293 3705.97 539 527 110.6
B 5 172 217399 1660.86 668 649 130.5
B 10 246 103293 786.52 668 649 130.5
B 15 85 30043 225.23 668 649 130.5
C 15 208 3155003 23476.21 573 576 134.4
C 9 187 1747963 13004.59 573 576 134.4
C 15 214 226259 1679.6 573 576 134.4
D 13 171 183276 1145.3 647 628 159.5
D 2 250 161301 1007.5 647 628 159.5
D 5 32 117379 732.09 647 628 159.5

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