ASTROSAT CZTI

Data Quality Report

Orbit 24166

Creation date: 2024-06-27T19:03:00.047424
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/AS1A07_067T01_9000003578_24166cztM0_level2.evt modeM0/AS1A07_067T01_9000003578_24166cztM0_level2_quad_clean.evt
Size (bytes)1,129,190,400170,945,280
Size1.1 GB 163.0 MB
Events in quadrant A6,276,1531,092,126
Events in quadrant B6,355,9351,114,707
Events in quadrant C6,493,8451,078,201
Events in quadrant D14,172,480972,442

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02740
B02740
C02740
D02740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0273233
B0273723
C0277273
D0512233

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A13302940.706661%
B133021381.037438%
C133032271.706382%
D13303258919.461776%

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 15002 13303 1 1 0.01% 0.01%
B 15002 13305 1 1 0.01% 0.01%
C 15003 13305 13 13 0.09% 0.10%
D 15003 13304 2149 2149 14.32% 16.15%

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 13 254 21295 60.84 1620 1587 323.9
A 3 1 19349 54.83 1620 1587 323.9
A 3 137 14559 40.04 1620 1587 323.9
B 12 111 37716 117.34 1614 1570 308.0
B 11 111 33452 103.5 1614 1570 308.0
B 14 111 28890 88.69 1614 1570 308.0
C 14 238 246399 674.1 1554 1562 363.2
C 10 23 78391 211.53 1554 1562 363.2
C 10 9 38688 102.22 1554 1562 363.2
D 7 238 8193989 23288.4 1455 1410 351.8
D 8 195 289558 819.1 1455 1410 351.8
D 1 52 80325 224.33 1455 1410 351.8

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