ASTROSAT CZTI

Data Quality Report

Orbit 42848

Creation date: 2024-06-27T22:44:57.123424
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/AS1T05_138T01_9000005828_42848cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42848cztM0_level2_quad_clean.evt
Size (bytes)470,344,32087,094,080
Size448.6 MB 83.1 MB
Events in quadrant A3,075,925616,836
Events in quadrant B5,967,443493,879
Events in quadrant C3,032,401620,687
Events in quadrant D4,912,281524,724

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125432
B0214352
C0124612
D0184292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5438290.533284%
B5438128123.556455%
C5438711.305627%
D543857610.592129%

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 7230 5439 13 13 0.18% 0.24%
B 7229 5438 1204 1204 16.66% 22.14%
C 7230 5439 79 79 1.09% 1.45%
D 7230 5439 560 560 7.75% 10.30%

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 625387 5033.93 601 590 124.1
A 13 248 43021 341.86 601 590 124.1
A 15 237 41330 328.24 601 590 124.1
B 4 81 3663047 35514.62 523 507 103.1
B 4 171 122768 1185.53 523 507 103.1
B 5 255 79681 767.73 523 507 103.1
C 14 254 468515 3403.74 585 589 137.5
C 15 214 221744 1608.7 585 589 137.5
C 0 207 20551 145.2 585 589 137.5
D 1 52 1181024 8609.43 561 547 137.1
D 10 118 557653 4063.07 561 547 137.1
D 2 249 288676 2101.38 561 547 137.1

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