ASTROSAT CZTI

Data Quality Report

Orbit 26718

Creation date: 2024-06-27T19:32:05.227747
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/AS1T03_223T01_9000003850_26718cztM0_level2.evt modeM0/AS1T03_223T01_9000003850_26718cztM0_level2_quad_clean.evt
Size (bytes)286,130,88048,479,040
Size272.9 MB 46.2 MB
Events in quadrant A1,864,413315,151
Events in quadrant B2,390,745315,482
Events in quadrant C1,725,122313,034
Events in quadrant D2,444,265275,326

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A113966048641719246
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A077250
B091760
C074290
D095510

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3484220.631458%
B31553149.952456%
C3638160.439802%
D34202236.520468%

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 4544 4012 7 7 0.15% 0.17%
B 4411 3537 205 205 4.65% 5.80%
C 4539 4137 0 0 0.00% 0.00%
D 4523 3929 177 177 3.91% 4.50%

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 13 215941 2491.99 426 417 86.5
A 13 254 5919 63.62 426 417 86.5
A 3 137 3805 39.17 426 417 86.5
B 0 189 751596 10854.14 362 354 69.2
B 10 246 214561 3094.92 362 354 69.2
B 12 111 7999 110.46 362 354 69.2
C 14 238 68360 689.66 422 425 98.5
C 3 233 4383 40.18 422 425 98.5
C 15 208 4212 38.44 422 425 98.5
D 1 52 851505 8245.07 380 372 103.2
D 2 250 71357 687.64 380 372 103.2
D 7 80 50168 482.38 380 372 103.2

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