ASTROSAT CZTI

Data Quality Report

Orbit 38420

Creation date: 2024-06-27T21:52:31.286838
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_018T01_9000005386_38420cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38420cztM0_level2_quad_clean.evt
Size (bytes)343,146,24088,407,360
Size327.2 MB 84.3 MB
Events in quadrant A3,077,591600,148
Events in quadrant B2,599,849612,206
Events in quadrant C2,484,268588,972
Events in quadrant D4,154,311527,804

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122943
B0109122
C0102572
D0157642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4961661.330377%
B4961480.967547%
C4961280.564402%
D49612384.797420%

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 7083 4962 50 50 0.71% 1.01%
B 7083 4962 28 28 0.40% 0.56%
C 7083 4962 17 17 0.24% 0.34%
D 7083 4962 210 210 2.96% 4.23%

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 15 223 404836 3558.56 559 549 113.6
A 10 83 399058 3507.7 559 549 113.6
A 13 6 34523 299.04 559 549 113.6
B 0 183 177657 1670.36 560 543 106.0
B 4 232 46316 431.68 560 543 106.0
B 4 171 32938 305.51 560 543 106.0
C 15 214 207675 1605.72 557 561 129.0
C 14 254 40293 308.04 557 561 129.0
C 0 10 28145 213.85 557 561 129.0
D 12 235 908037 6899.31 547 532 131.5
D 2 250 447793 3400.3 547 532 131.5
D 2 16 352590 2676.52 547 532 131.5

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