ASTROSAT CZTI

Data Quality Report

Orbit 21735

Creation date: 2024-06-27T18:31:37.670833
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_005T01_9000003224_21735cztM0_level2.evt modeM0/AS1A07_005T01_9000003224_21735cztM0_level2_quad_clean.evt
Size (bytes)986,834,880135,616,320
Size941.1 MB 129.3 MB
Events in quadrant A7,699,584779,353
Events in quadrant B6,447,141857,306
Events in quadrant C5,941,547813,265
Events in quadrant D8,955,286794,820

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0308253
B0268213
C0254743
D0349363

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02540
D02540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124717866.302622%
B124711491.194772%
C124711481.186753%
D124706275.028067%

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 14021 12472 699 699 4.99% 5.60%
B 14021 12473 18 18 0.13% 0.14%
C 14021 12473 0 0 0.00% 0.00%
D 14020 12472 433 433 3.09% 3.47%

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 15 236 1896525 6473.57 1451 1417 292.7
A 6 16 158088 535.18 1451 1417 292.7
A 5 16 52032 172.9 1451 1417 292.7
B 3 64 186989 640.03 1517 1477 289.8
B 0 230 145025 495.25 1517 1477 289.8
B 0 190 66561 224.55 1517 1477 289.8
C 14 238 229287 663.2 1463 1471 343.5
C 13 61 10167 25.32 1463 1471 343.5
C 10 23 8385 20.13 1463 1471 343.5
D 7 238 1291272 3609.77 1462 1420 357.3
D 12 235 1276603 3568.71 1462 1420 357.3
D 1 52 344841 961.09 1462 1420 357.3

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