ASTROSAT CZTI

Data Quality Report

Orbit 28495

Creation date: 2024-06-27T19:52:24.361632
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/AS1A10_110T04_9000004094_28495cztM0_level2.evt modeM0/AS1A10_110T04_9000004094_28495cztM0_level2_quad_clean.evt
Size (bytes)1,214,251,200157,573,440
Size1.1 GB 150.3 MB
Events in quadrant A5,914,1751,032,492
Events in quadrant B10,206,1621,017,450
Events in quadrant C6,041,4771,017,021
Events in quadrant D13,773,511845,579

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258292
B0385422
C0259982
D0494342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02540
D02540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124101731.394037%
B12411160112.899847%
C124112752.215776%
D12411303024.413826%

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 12885 12411 0 0 0.00% 0.00%
B 12886 12412 1125 1125 8.73% 9.06%
C 12886 12411 0 0 0.00% 0.00%
D 12886 12411 2472 2472 19.18% 19.92%

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 19306 57.61 1529 1498 309.1
A 3 137 15421 45.04 1529 1498 309.1
A 0 226 12883 36.83 1529 1498 309.1
B 10 245 4513624 16236.88 1442 1408 277.9
B 12 111 35227 121.7 1442 1408 277.9
B 11 111 31807 109.39 1442 1408 277.9
C 14 238 235717 676.31 1470 1480 346.3
C 7 247 26667 72.72 1470 1480 346.3
C 3 233 15176 39.54 1470 1480 346.3
D 1 52 7290202 23361.21 1293 1255 312.0
D 8 195 660218 2111.99 1293 1255 312.0
D 12 233 433682 1385.94 1293 1255 312.0

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