ASTROSAT CZTI

Data Quality Report

Orbit 48449

Creation date: 2024-09-13T09:46:55.983751
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_029T01_9000006426_48449cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48449cztM0_level2_quad_clean.evt
Size (bytes)499,466,880106,634,880
Size476.3 MB 101.7 MB
Events in quadrant A7,454,859683,158
Events in quadrant B3,452,229731,205
Events in quadrant C3,021,050713,495
Events in quadrant D4,031,220625,540

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0278701
B0149001
C0140401
D0167651

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68175538.112073%
B68172263.315241%
C68181121.642710%
D68183605.280141%

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 7502 6817 199 199 2.65% 2.92%
B 7502 6817 39 39 0.52% 0.57%
C 7503 6819 1 1 0.01% 0.01%
D 7503 6818 208 208 2.77% 3.05%

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 3963032 25067.43 754 738 158.1
A 13 248 543872 3436.13 754 738 158.1
A 7 3 23915 146.63 754 738 158.1
B 12 16 300542 1934.7 765 738 155.0
B 5 255 86196 551.48 765 738 155.0
B 0 197 29173 183.5 765 738 155.0
C 12 249 24370 131.02 762 766 180.2
C 14 67 9859 50.47 762 766 180.2
C 12 2 8535 43.12 762 766 180.2
D 2 165 433553 2287.43 753 730 189.2
D 11 224 321011 1692.65 753 730 189.2
D 2 249 90557 474.73 753 730 189.2

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