ASTROSAT CZTI

Data Quality Report

Orbit 18308

Creation date: 2024-06-27T17:48:07.929442
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/AS1A06_006T01_9000002720_18308cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18308cztM0_level2_quad_clean.evt
Size (bytes)979,868,160134,902,080
Size934.5 MB 128.7 MB
Events in quadrant A5,639,694840,500
Events in quadrant B5,951,572852,234
Events in quadrant C5,737,188825,608
Events in quadrant D11,556,981757,365

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02400
B02400
C02400
D02400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240173
B0248583
C0241543
D0423643

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11694280.239439%
B11694590.504532%
C11694890.761074%
D1169410068.602702%

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 11695 0 0 0.00% 0.00%
B 14040 11695 5 5 0.04% 0.04%
C 14040 11696 0 0 0.00% 0.00%
D 14040 11695 857 857 6.10% 7.33%

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 0 226 12558 37.89 1464 1437 293.5
A 12 194 10549 31.04 1464 1437 293.5
A 3 137 10412 30.58 1464 1437 293.5
B 7 220 64418 227.39 1476 1442 277.0
B 0 197 37511 130.24 1476 1442 277.0
B 4 216 34834 120.57 1476 1442 277.0
C 14 238 218911 664.93 1412 1421 327.1
C 3 233 10739 28.49 1412 1421 327.1
C 13 61 10344 27.28 1412 1421 327.1
D 7 238 3972114 11902.38 1383 1343 333.6
D 1 52 1710036 5121.81 1383 1343 333.6
D 13 168 517455 1547.04 1383 1343 333.6

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