ASTROSAT CZTI

Data Quality Report

Orbit 25545

Creation date: 2024-06-27T19:18:51.605736
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/AS1A09_008T05_9000003724_25545cztM0_level2.evt modeM0/AS1A09_008T05_9000003724_25545cztM0_level2_quad_clean.evt
Size (bytes)605,963,52092,540,160
Size577.9 MB 88.3 MB
Events in quadrant A3,124,583617,056
Events in quadrant B3,193,165629,167
Events in quadrant C6,320,357546,622
Events in quadrant D5,279,833562,230

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132810
B0134210
C0230510
D0203340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6414110.171500%
B6414190.296227%
C6413119618.649618%
D64131332.073912%

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 7569 6415 0 0 0.00% 0.00%
B 7569 6415 1 1 0.01% 0.02%
C 7568 6414 680 680 8.99% 10.60%
D 7568 6414 98 98 1.29% 1.53%

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 9736 55.33 810 793 161.6
A 3 137 7407 40.92 810 793 161.6
A 0 226 7038 38.63 810 793 161.6
B 12 111 18565 115.26 811 792 154.2
B 11 111 16745 103.46 811 792 154.2
B 14 111 15698 96.67 811 792 154.2
C 2 16 3318522 19216.87 736 742 172.6
C 14 238 117904 678.61 736 742 172.6
C 3 233 8651 45.81 736 742 172.6
D 1 52 1200293 5873.14 766 750 204.2
D 8 195 1128693 5522.57 766 750 204.2
D 2 234 27274 129.87 766 750 204.2

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