ASTROSAT CZTI

Data Quality Report

Orbit 44459

Creation date: 2024-06-27T23:01:25.716386
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_077T01_9000005984_44459cztM0_level2.fits modeM0/AS1A13_077T01_9000005984_44459cztM0_level2_quad_clean.evt
Size (bytes)489,968,640112,291,200
Size467.3 MB 107.1 MB
Events in quadrant A4,764,968770,740
Events in quadrant B3,428,229785,696
Events in quadrant C4,714,516723,951
Events in quadrant D4,723,198665,176

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197312
B0146023
C0185102
D0185072

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65221141.747930%
B65212133.266370%
C65224386.715731%
D65223655.596443%

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 7687 6523 3 3 0.04% 0.05%
B 7686 6522 124 124 1.61% 1.90%
C 7687 6523 343 343 4.46% 5.26%
D 7687 6523 260 260 3.38% 3.99%

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 1740631 11073.75 763 749 157.1
A 14 238 48304 302.67 763 749 157.1
A 7 3 17151 104.39 763 749 157.1
B 5 172 441276 3030.57 750 730 145.4
B 12 111 18243 120.47 750 730 145.4
B 11 111 16836 110.8 750 730 145.4
C 12 16 1371327 8083.35 726 730 169.6
C 14 254 462502 2723.39 726 730 169.6
C 3 233 29343 168.75 726 730 169.6
D 13 138 683414 3833.05 725 705 178.1
D 1 52 319996 1792.65 725 705 178.1
D 5 235 164487 919.55 725 705 178.1

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