ASTROSAT CZTI

Data Quality Report

Orbit 22021

Creation date: 2024-06-27T18:35:26.705602
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_059T05_9000003252_22021cztM0_level2.evt modeM0/AS1A07_059T05_9000003252_22021cztM0_level2_quad_clean.evt
Size (bytes)756,434,880109,054,080
Size721.4 MB 104.0 MB
Events in quadrant A3,712,703730,927
Events in quadrant B3,969,983738,638
Events in quadrant C3,791,795705,134
Events in quadrant D10,905,743584,191

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162333
B0168813
C0162843
D0376643

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7811971.241838%
B78111782.278838%
C78111712.189220%
D7811239630.674690%

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 8286 7814 0 0 0.00% 0.00%
B 8286 7812 21 21 0.25% 0.27%
C 8286 7813 0 0 0.00% 0.00%
D 8286 7814 2360 2360 28.48% 30.20%

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 14538 70.39 959 939 193.2
A 0 226 8215 37.66 959 939 193.2
A 3 137 8205 37.61 959 939 193.2
B 3 64 98844 533.84 959 934 183.4
B 0 190 50916 272.52 959 934 183.4
B 12 111 21786 113.69 959 934 183.4
C 14 238 142694 649.22 926 932 218.4
C 8 128 15380 66.17 926 932 218.4
C 8 112 7965 32.21 926 932 218.4
D 5 222 5432921 26893.87 824 797 202.0
D 1 52 1094964 5417.11 824 797 202.0
D 7 38 768409 3800.37 824 797 202.0

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