ASTROSAT CZTI

Data Quality Report

Orbit 10466

Creation date: 2024-06-27T15:59:34.843943
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/AS1A03_126T01_9000001512_10466cztM0_level2.evt modeM0/AS1A03_126T01_9000001512_10466cztM0_level2_quad_clean.evt
Size (bytes)387,388,80073,514,880
Size369.4 MB 70.1 MB
Events in quadrant A2,847,130437,224
Events in quadrant B2,637,972471,905
Events in quadrant C2,508,079473,685
Events in quadrant D3,382,474477,318

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256139
B0256130
C0256135
D0246124

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02921817701
B02871617685
C02606415201
D03244918750

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02411
B02511
C02511
D0249

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4939561.133833%
B50451001.982161%
C5277330.625355%
D5498651.182248%

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 7525 5929 1 1 0.01% 0.02%
B 7523 5922 17 17 0.23% 0.29%
C 7525 6134 0 0 0.00% 0.00%
D 7525 6067 9 9 0.12% 0.15%

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 13 251 428973 3515.44 601 588 121.9
A 3 80 61953 503.58 601 588 121.9
A 1 162 20012 159.4 601 588 121.9
B 4 239 171479 1443.61 615 599 118.4
B 0 214 56603 473.13 615 599 118.4
B 12 111 12730 102.48 615 599 118.4
C 14 234 23264 152.85 636 640 148.0
C 13 61 4768 27.89 636 640 148.0
C 3 202 1612 6.57 636 640 148.0
D 8 195 376119 2367.19 657 639 158.6
D 1 20 370713 2333.11 657 639 158.6
D 1 52 130803 820.61 657 639 158.6

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