ASTROSAT CZTI

Data Quality Report

Orbit 23529

Creation date: 2024-06-27T18:55:45.748123
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/AS1A07_011T01_9000003482_23529cztM0_level2.evt modeM0/AS1A07_011T01_9000003482_23529cztM0_level2_quad_clean.evt
Size (bytes)867,499,200162,308,160
Size827.3 MB 154.8 MB
Events in quadrant A5,743,7021,028,336
Events in quadrant B6,593,8591,036,059
Events in quadrant C5,919,5271,002,397
Events in quadrant D7,174,533990,925

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02575
B02566
C02555
D02577

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025920543
B028402582
C026290538
D0314851340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124231000.804959%
B124252301.851107%
C124301711.375704%
D124014953.991614%

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 14197 12454 3 3 0.02% 0.02%
B 14198 12449 65 65 0.46% 0.52%
C 14197 12456 0 0 0.00% 0.00%
D 14197 12422 255 255 1.80% 2.05%

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 10 253 27535 87.37 1481 1447 298.6
A 13 254 21853 68.34 1481 1447 298.6
A 3 137 13091 39.0 1481 1447 298.6
B 0 189 418218 1494.92 1467 1429 278.8
B 3 64 238648 850.85 1467 1429 278.8
B 15 32 63347 222.08 1467 1429 278.8
C 14 238 224844 674.37 1418 1423 331.3
C 7 247 119298 355.79 1418 1423 331.3
C 0 207 20313 57.02 1418 1423 331.3
D 9 85 1004746 2891.34 1428 1384 347.0
D 1 52 482392 1386.1 1428 1384 347.0
D 12 233 121609 346.45 1428 1384 347.0

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