ASTROSAT CZTI

Data Quality Report

Orbit 44445

Creation date: 2024-06-27T23:03:38.561840
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/AS1A13_072T03_9000006000_44445cztM0_level2.fits modeM0/AS1A13_072T03_9000006000_44445cztM0_level2_quad_clean.evt
Size (bytes)385,773,12097,269,120
Size367.9 MB 92.8 MB
Events in quadrant A4,106,940656,479
Events in quadrant B2,787,713682,051
Events in quadrant C2,795,118643,603
Events in quadrant D4,150,040567,466

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172901
B0119901
C0121351
D0161931

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56621071.889792%
B5662751.324620%
C5662400.706464%
D56623265.757683%

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 6857 5664 5 5 0.07% 0.09%
B 6857 5664 9 9 0.13% 0.16%
C 6857 5664 18 18 0.26% 0.32%
D 6857 5664 249 249 3.63% 4.40%

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 10 83 1461539 10619.98 664 651 137.6
A 10 248 54760 393.35 664 651 137.6
A 13 252 12267 84.44 664 651 137.6
B 5 172 79477 614.23 659 639 128.4
B 0 168 54205 417.34 659 639 128.4
B 0 229 20189 152.32 659 639 128.4
C 14 254 117028 760.53 648 652 153.0
C 2 14 69537 450.17 648 652 153.0
C 12 16 62870 406.6 648 652 153.0
D 2 249 572489 3563.46 637 617 160.5
D 13 249 491728 3060.22 637 617 160.5
D 1 52 191539 1189.68 637 617 160.5

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