ASTROSAT CZTI

Data Quality Report

Orbit 26352

Creation date: 2024-06-27T19:28:05.886527
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/AS1A09_143T05_9000003804_26352cztM0_level2.evt modeM0/AS1A09_143T05_9000003804_26352cztM0_level2_quad_clean.evt
Size (bytes)973,025,280169,214,400
Size927.9 MB 161.4 MB
Events in quadrant A5,501,9581,115,238
Events in quadrant B6,085,3961,123,554
Events in quadrant C9,471,8711,024,574
Events in quadrant D7,610,9811,044,671

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240730
B0254830
C0359640
D0303620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11807870.736851%
B118061481.253600%
C1180610649.012367%
D118064774.040318%

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 13152 11809 0 0 0.00% 0.00%
B 13151 11808 46 46 0.35% 0.39%
C 13150 11807 442 442 3.36% 3.74%
D 13151 11808 324 324 2.46% 2.74%

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 13 254 20657 67.16 1421 1392 286.8
A 6 16 14496 45.68 1421 1392 286.8
A 3 137 13142 40.96 1421 1392 286.8
B 5 172 257496 946.47 1409 1369 270.6
B 0 230 227904 837.11 1409 1369 270.6
B 0 219 56044 202.04 1409 1369 270.6
C 3 233 3860562 12382.65 1330 1337 311.7
C 14 238 210121 669.9 1330 1337 311.7
C 0 239 150388 478.24 1330 1337 311.7
D 1 52 1475482 4529.66 1366 1337 325.4
D 12 233 704444 2160.46 1366 1337 325.4
D 11 176 164980 502.83 1366 1337 325.4

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