ASTROSAT CZTI

Data Quality Report

Orbit 00610

Creation date: 2024-06-27T14:00:31.906260
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/AS1P01_126T01_9000000084_00610cztM0_level2.evt modeM0/AS1P01_126T01_9000000084_00610cztM0_level2_quad_clean.evt
Size (bytes)774,552,96056,877,120
Size738.7 MB 54.2 MB
Events in quadrant A5,920,116344,605
Events in quadrant B6,011,324351,023
Events in quadrant C5,462,737348,381
Events in quadrant D5,739,051335,956

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210783
B0213452
C0197052
D0204882

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A487980.163968%
B4879260.532896%
C487920.040992%
D4879350.717360%

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 7034 4880 101 101 1.44% 2.07%
B 7034 4880 148 148 2.10% 3.03%
C 7034 4880 55 55 0.78% 1.13%
D 7034 4880 134 134 1.91% 2.75%

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 15 171 52773 155.5 1495 1479 329.9
A 0 238 34227 99.27 1495 1479 329.9
A 13 160 26020 74.4 1495 1479 329.9
B 7 221 249434 725.52 1454 1462 341.8
B 5 191 80250 230.52 1454 1462 341.8
B 0 220 37237 104.67 1454 1462 341.8
C 1 1 65962 172.75 1348 1397 373.7
C 8 208 43009 111.34 1348 1397 373.7
C 15 241 27615 70.15 1348 1397 373.7
D 13 221 234632 565.5 1316 1366 412.5
D 12 237 130452 312.94 1316 1366 412.5
D 1 4 66330 157.49 1316 1366 412.5

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