ASTROSAT CZTI

Data Quality Report

Orbit 28905

Creation date: 2024-06-27T19:57:49.348495
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_064T01_9000004144_28905cztM0_level2.evt modeM0/AS1A10_064T01_9000004144_28905cztM0_level2_quad_clean.evt
Size (bytes)838,736,64083,986,560
Size799.9 MB 80.1 MB
Events in quadrant A3,144,078578,147
Events in quadrant B3,218,406600,181
Events in quadrant C8,115,517510,650
Events in quadrant D10,501,815416,544

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132112
B0134272
C0285732
D0354702

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6259120.191724%
B6259210.335517%
C6259112617.990094%
D6259301348.138680%

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 7543 6258 0 0 0.00% 0.00%
B 7543 6258 1 1 0.01% 0.02%
C 7543 6258 521 521 6.91% 8.33%
D 7543 6258 3115 3115 41.30% 49.78%

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 10946 62.81 811 797 161.6
A 6 16 8634 48.5 811 797 161.6
A 3 137 7476 41.33 811 797 161.6
B 12 111 18125 113.31 818 797 152.9
B 11 111 16214 100.82 818 797 152.9
B 14 111 15277 94.69 818 797 152.9
C 3 233 5005265 28663.44 753 760 174.6
C 14 238 135974 774.44 753 760 174.6
C 14 254 23835 132.16 753 760 174.6
D 8 195 6770629 43243.14 665 648 156.6
D 1 52 1207729 7710.21 665 648 156.6
D 2 234 19525 120.58 665 648 156.6

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