ASTROSAT CZTI

Data Quality Report

Orbit 42622

Creation date: 2024-06-27T22:42:20.267753
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/AS1A05_174T01_9000005820_42622cztM0_level2.fits modeM0/AS1A05_174T01_9000005820_42622cztM0_level2_quad_clean.evt
Size (bytes)304,940,16084,127,680
Size290.8 MB 80.2 MB
Events in quadrant A2,922,629560,212
Events in quadrant B2,356,242575,945
Events in quadrant C2,435,962554,065
Events in quadrant D3,177,639501,482

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0290
C0290
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117362
B0104342
C0103062
D0129612

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5071260.512719%
B507160.118320%
C5071100.197200%
D50711873.687636%

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 6984 5072 10 10 0.14% 0.20%
B 6984 5072 0 0 0.00% 0.00%
C 6984 5072 5 5 0.07% 0.10%
D 6984 5072 160 160 2.29% 3.15%

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 523494 4515.98 564 551 115.8
A 2 79 199634 1719.22 564 551 115.8
A 9 254 13005 107.55 564 551 115.8
B 0 245 72841 666.35 562 548 108.5
B 7 219 32368 293.3 562 548 108.5
B 12 111 14006 124.05 562 548 108.5
C 15 214 213614 1616.89 557 560 131.8
C 3 233 30691 228.67 557 560 131.8
C 14 254 17567 129.07 557 560 131.8
D 1 52 340564 2515.99 549 534 135.1
D 2 249 303615 2242.59 549 534 135.1
D 13 249 274342 2025.99 549 534 135.1

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