ASTROSAT CZTI

Data Quality Report

Orbit 00194

Creation date: 2024-06-27T13:57:37.146537
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_120T01_9000000016_00194cztM0_level2.evt modeM0/AS1P01_120T01_9000000016_00194cztM0_level2_quad_clean.evt
Size (bytes)810,593,28048,165,120
Size773.0 MB 45.9 MB
Events in quadrant A5,591,424286,524
Events in quadrant B7,503,790281,090
Events in quadrant C5,355,078288,752
Events in quadrant D5,788,023273,250

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A018894
B018894
C018894
D018894

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03981819910
B05143825723
C03847619239
D04107620539

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042
B042
C042
D063

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A467930.064116%
B467867714.471997%
C4679150.320581%
D4679962.051720%

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 4680 4680 99 99 2.12% 2.12%
B 4680 4680 1265 1265 27.03% 27.03%
C 4680 4680 73 73 1.56% 1.56%
D 4680 4680 241 241 5.15% 5.15%

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 12 189 14225 40.13 1436 1422 319.0
A 0 253 7841 20.12 1436 1422 319.0
A 13 239 7831 20.09 1436 1422 319.0
B 0 247 2163073 6702.42 1377 1386 322.5
B 0 217 18334 52.55 1377 1386 322.5
B 0 183 9685 25.73 1377 1386 322.5
C 0 202 140401 384.83 1288 1333 361.4
C 1 192 125357 343.2 1288 1333 361.4
C 0 188 11235 27.4 1288 1333 361.4
D 10 229 339416 859.77 1290 1337 393.2
D 13 88 75962 189.78 1290 1337 393.2
D 9 51 71825 179.26 1290 1337 393.2

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