ASTROSAT CZTI

Data Quality Report

Orbit 38900

Creation date: 2024-06-27T21:57:55.993250
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/AS1T05_064T01_9000005416_38900cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38900cztM0_level2_quad_clean.evt
Size (bytes)487,791,36088,709,760
Size465.2 MB 84.6 MB
Events in quadrant A2,933,570620,621
Events in quadrant B2,504,297640,544
Events in quadrant C2,986,135618,255
Events in quadrant D9,191,292409,992

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122463
B0114572
C0124532
D0312332

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5673190.334920%
B5673100.176274%
C5673380.669840%
D5673197334.778777%

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 7286 5674 14 14 0.19% 0.25%
B 7286 5674 2 2 0.03% 0.04%
C 7286 5674 32 32 0.44% 0.56%
D 7286 5673 1960 1960 26.90% 34.55%

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 434797 3461.93 617 604 125.4
A 13 248 97087 769.28 617 604 125.4
A 13 254 8818 65.49 617 604 125.4
B 5 172 29829 244.21 617 599 119.7
B 0 230 28234 230.89 617 599 119.7
B 12 111 14937 119.79 617 599 119.7
C 15 214 234886 1662.66 604 608 140.9
C 14 254 226778 1605.12 604 608 140.9
C 3 233 142685 1008.32 604 608 140.9
D 12 227 3190835 24503.04 537 520 130.2
D 12 235 1002670 7696.96 537 520 130.2
D 14 52 978046 7507.84 537 520 130.2

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