ASTROSAT CZTI

Data Quality Report

Orbit 27541

Creation date: 2024-06-27T19:41:16.458353
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/AS1A09_038T27_9000003950_27541cztM0_level2.evt modeM0/AS1A09_038T27_9000003950_27541cztM0_level2_quad_clean.evt
Size (bytes)317,148,48071,265,600
Size302.5 MB 68.0 MB
Events in quadrant A2,142,383468,263
Events in quadrant B2,400,739478,047
Events in quadrant C2,205,394453,783
Events in quadrant D2,545,254437,433

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093480
B0100990
C094180
D0106010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4557270.592495%
B4556811.777875%
C4556410.899912%
D4556741.624232%

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 5622 4557 0 0 0.00% 0.00%
B 5621 4556 35 35 0.62% 0.77%
C 5621 4556 0 0 0.00% 0.00%
D 5621 4556 64 64 1.14% 1.40%

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 13 254 7663 63.34 554 542 112.4
A 3 137 5428 43.46 554 542 112.4
A 0 226 4588 35.99 554 542 112.4
B 10 245 196357 1862.63 551 536 105.1
B 15 32 14742 135.13 551 536 105.1
B 4 200 13379 122.16 551 536 105.1
C 14 238 87366 687.91 537 540 126.2
C 2 16 14609 111.47 537 540 126.2
C 8 128 4309 29.86 537 540 126.2
D 1 52 441825 3464.18 533 517 127.4
D 2 250 64992 506.12 533 517 127.4
D 2 234 18417 140.51 533 517 127.4

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