ASTROSAT CZTI

Data Quality Report

Orbit 06944

Creation date: 2024-06-27T15:13:29.667557
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/AS1A02_103T01_9000000950_06944cztM0_level2.evt modeM0/AS1A02_103T01_9000000950_06944cztM0_level2_quad_clean.evt
Size (bytes)832,029,12073,033,920
Size793.5 MB 69.7 MB
Events in quadrant A2,939,030518,690
Events in quadrant B3,380,369512,933
Events in quadrant C14,863,630237,809
Events in quadrant D3,586,550498,416

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129002
B0141661
C0484811
D0144441

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6328731.153603%
B63282363.729456%
C6328535184.560683%
D6328550.869153%

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 7358 6329 0 0 0.00% 0.00%
B 7358 6329 116 116 1.58% 1.83%
C 7358 6329 5107 5107 69.41% 80.69%
D 7358 6329 4 4 0.05% 0.06%

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 3 1 10642 63.76 756 740 155.3
A 14 111 9265 54.89 756 740 155.3
A 0 226 7365 42.66 756 740 155.3
B 0 228 452810 3175.95 745 727 142.3
B 4 173 18354 123.83 745 727 142.3
B 12 111 14422 96.21 745 727 142.3
C 9 247 13511340 170998.51 340 342 79.0
C 7 247 14766 182.55 340 342 79.0
C 8 128 3485 39.78 340 342 79.0
D 8 195 663438 3694.93 732 707 179.4
D 2 152 79167 437.44 732 707 179.4
D 12 233 34701 189.53 732 707 179.4

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