ASTROSAT CZTI

Data Quality Report

Orbit 34185

Creation date: 2024-06-27T20:57:32.436695
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/AS1A11_047T15_9000004882_34185cztM0_level2.evt modeM0/AS1A11_047T15_9000004882_34185cztM0_level2_quad_clean.evt
Size (bytes)587,629,44054,993,600
Size560.4 MB 52.4 MB
Events in quadrant A2,665,459326,816
Events in quadrant B5,913,831320,714
Events in quadrant C3,222,163324,302
Events in quadrant D5,612,445297,381

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115293
B0215162
C0128292
D0206552

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A566170.123653%
B566182114.502738%
C5661921.625155%
D56614598.108108%

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 7214 5662 0 0 0.00% 0.00%
B 7214 5662 611 611 8.47% 10.79%
C 7214 5662 67 67 0.93% 1.18%
D 7214 5662 364 364 5.05% 6.43%

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 83 23655 168.71 678 665 136.3
A 13 6 16158 113.7 678 665 136.3
A 13 254 10316 70.82 678 665 136.3
B 5 31 1693786 13541.67 648 630 125.0
B 5 15 754804 6031.8 648 630 125.0
B 5 172 627817 5016.17 648 630 125.0
C 0 10 300714 1957.08 658 662 153.3
C 15 214 260566 1695.22 658 662 153.3
C 14 254 76199 492.69 658 662 153.3
D 8 195 1476195 8900.53 631 615 165.8
D 7 80 653276 3936.78 631 615 165.8
D 7 223 427263 2573.49 631 615 165.8

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