ASTROSAT CZTI

Data Quality Report

Orbit 15090

Creation date: 2024-06-27T17:03:36.757510
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/AS1G08_028T01_9000002220_15090cztM0_level2.evt modeM0/AS1G08_028T01_9000002220_15090cztM0_level2_quad_clean.evt
Size (bytes)877,046,400165,536,640
Size836.4 MB 157.9 MB
Events in quadrant A6,019,4381,054,239
Events in quadrant B6,726,0001,063,088
Events in quadrant C6,656,8391,023,655
Events in quadrant D6,298,200993,735

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260444
B0280773
C0272093
D0276573

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A127191751.375894%
B127192411.894803%
C127191731.360170%
D127192111.658935%

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 14040 12720 0 0 0.00% 0.00%
B 14040 12720 4 4 0.03% 0.03%
C 14040 12720 0 0 0.00% 0.00%
D 14040 12720 85 85 0.61% 0.67%

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 12 189 84877 266.19 1544 1507 313.2
A 0 226 13451 38.13 1544 1507 313.2
A 12 194 11028 30.4 1544 1507 313.2
B 3 64 513515 1726.59 1538 1498 296.5
B 10 245 206119 690.01 1538 1498 296.5
B 12 111 36750 118.87 1538 1498 296.5
C 3 233 574499 1649.55 1497 1505 347.4
C 3 9 233964 669.21 1497 1505 347.4
C 7 247 15381 39.95 1497 1505 347.4
D 9 1 539299 1475.75 1496 1450 364.5
D 13 104 59247 158.58 1496 1450 364.5
D 2 234 40404 106.88 1496 1450 364.5

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