ASTROSAT CZTI

Data Quality Report

Orbit 35173

Creation date: 2022-03-31T16:00:09.898223
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/AS1C07_001T06_9000005046_35173cztM0_level2.evt modeM0/AS1C07_001T06_9000005046_35173cztM0_level2_quad_clean.evt
Size (bytes)754,966,08099,069,120
Size720.0 MB 94.5 MB
Events in quadrant A2,627,718730,266
Events in quadrant B9,225,059556,756
Events in quadrant C3,081,129712,364
Events in quadrant D7,579,824634,826

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109743
B0309562
C0121422
D0261422

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5202160.307574%
B5202278553.537101%
C5202941.806997%
D5202102519.703960%

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 7115 5203 3 3 0.04% 0.06%
B 7115 5203 2010 2010 28.25% 38.63%
C 7115 5203 77 77 1.08% 1.48%
D 7115 5203 995 995 13.98% 19.12%

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 95620 754.02 639 628 126.0
A 9 143 22556 174.06 639 628 126.0
A 13 6 13885 105.23 639 628 126.0
B 5 236 6761913 70581.26 502 489 95.8
B 5 172 329976 3439.45 502 489 95.8
B 15 85 48365 499.77 502 489 95.8
C 0 10 267795 1933.41 604 608 138.2
C 15 214 219731 1585.61 604 608 138.2
C 0 207 98039 705.03 604 608 138.2
D 8 195 4502702 31652.38 595 580 142.2
D 2 250 154685 1083.44 595 580 142.2
D 13 249 129864 908.94 595 580 142.2

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