ASTROSAT CZTI

Data Quality Report

Orbit 42312

Creation date: 2024-06-27T22:38:49.883681
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_102T01_9000005794_42312cztM0_level2.fits modeM0/AS1A12_102T01_9000005794_42312cztM0_level2_quad_clean.evt
Size (bytes)332,173,44093,764,160
Size316.8 MB 89.4 MB
Events in quadrant A3,222,746634,548
Events in quadrant B2,605,118647,582
Events in quadrant C2,664,590612,310
Events in quadrant D3,367,355552,962

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128572
B0116562
C0113922
D0138782

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5599380.678693%
B5599300.535810%
C559970.125022%
D55992384.250759%

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 7362 5600 19 19 0.26% 0.34%
B 7362 5600 25 25 0.34% 0.45%
C 7362 5600 3 3 0.04% 0.05%
D 7362 5600 211 211 2.87% 3.77%

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 597432 4681.87 625 613 127.5
A 15 235 88997 693.35 625 613 127.5
A 7 3 74194 577.22 625 613 127.5
B 15 35 75396 633.92 617 600 118.0
B 3 112 53258 446.29 617 600 118.0
B 5 172 31004 257.68 617 600 118.0
C 15 214 235086 1674.85 604 608 140.0
C 15 159 43314 305.04 604 608 140.0
C 12 249 28885 201.98 604 608 140.0
D 12 233 615256 4216.29 600 583 145.8
D 1 52 178200 1218.35 600 583 145.8
D 12 6 117217 800.04 600 583 145.8

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