ASTROSAT CZTI

Data Quality Report

Orbit 15669

Creation date: 2024-06-27T17:11:53.155581
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/AS1T02_084T01_9000002318_15669cztM0_level2.evt modeM0/AS1T02_084T01_9000002318_15669cztM0_level2_quad_clean.evt
Size (bytes)916,819,200170,242,560
Size874.3 MB 162.4 MB
Events in quadrant A5,820,1331,085,404
Events in quadrant B8,443,1171,077,840
Events in quadrant C5,984,6511,065,296
Events in quadrant D6,655,6081,046,670

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259934
B0335743
C0262033
D0290723

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12749530.415719%
B127493032.376657%
C127491110.870657%
D12750410.321569%

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 14090 12752 0 0 0.00% 0.00%
B 14090 12752 145 145 1.03% 1.14%
C 14090 12752 0 0 0.00% 0.00%
D 14091 12753 12 12 0.09% 0.09%

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 4 2 14723 44.07 1503 1474 300.6
A 0 226 13635 40.45 1503 1474 300.6
A 12 194 11224 32.43 1503 1474 300.6
B 5 65 2148268 7587.58 1492 1457 282.9
B 4 80 182914 641.33 1492 1457 282.9
B 0 189 67480 233.35 1492 1457 282.9
C 14 238 223844 662.26 1435 1441 335.8
C 3 233 122771 361.29 1435 1441 335.8
C 8 128 12102 31.74 1435 1441 335.8
D 1 52 1034660 2941.16 1453 1409 351.3
D 2 234 54757 151.86 1453 1409 351.3
D 10 70 37503 102.74 1453 1409 351.3

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