ASTROSAT CZTI

Data Quality Report

Orbit 15655

Creation date: 2024-06-27T17:11:41.804683
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/AS1T02_084T01_9000002318_15655cztM0_level2.evt modeM0/AS1T02_084T01_9000002318_15655cztM0_level2_quad_clean.evt
Size (bytes)118,514,88032,048,640
Size113.0 MB 30.6 MB
Events in quadrant A791,843215,904
Events in quadrant B898,194217,112
Events in quadrant C821,490210,549
Events in quadrant D960,889203,337

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034702
B037841
C035111
D040331

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A168390.534759%
B1683160.950683%
C1683150.891266%
D1683201.188354%

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 2484 1684 0 0 0.00% 0.00%
B 2484 1684 0 0 0.00% 0.00%
C 2483 1684 0 0 0.00% 0.00%
D 2484 1685 19 19 0.76% 1.13%

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 69 2177 45.46 204 200 43.5
A 0 226 1872 38.44 204 200 43.5
A 13 248 1623 32.72 204 200 43.5
B 4 216 39311 943.01 205 200 41.5
B 0 189 29333 702.43 205 200 41.5
B 0 229 7496 175.92 205 200 41.5
C 3 233 39506 830.29 192 193 47.3
C 14 238 28915 606.61 192 193 47.3
C 13 61 1382 25.11 192 193 47.3
D 1 52 96591 1943.88 193 187 49.6
D 2 16 94461 1900.93 193 187 49.6
D 10 70 12117 240.56 193 187 49.6

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