ASTROSAT CZTI

Data Quality Report

Orbit 16611

Creation date: 2024-06-27T17:25:04.936882
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/AS1C04_009T01_9000002448_16611cztM0_level2.evt modeM0/AS1C04_009T01_9000002448_16611cztM0_level2_quad_clean.evt
Size (bytes)432,267,840113,639,040
Size412.2 MB 108.4 MB
Events in quadrant A2,821,560763,113
Events in quadrant B3,322,974775,423
Events in quadrant C3,052,245745,332
Events in quadrant D3,474,438726,463

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125422
B0136771
C0129071
D0145401

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6179470.760641%
B6179731.181421%
C6179621.003399%
D6179921.488914%

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 7115 6181 1 1 0.01% 0.02%
B 7115 6181 18 18 0.25% 0.29%
C 7115 6181 0 0 0.00% 0.00%
D 7115 6181 48 48 0.67% 0.78%

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 15 69 22964 151.04 722 704 147.4
A 9 143 10139 64.02 722 704 147.4
A 3 1 7366 45.2 722 704 147.4
B 15 35 119531 864.49 721 701 137.5
B 7 220 82900 598.0 721 701 137.5
B 3 209 69007 496.93 721 701 137.5
C 3 233 156789 966.69 691 695 161.5
C 14 238 107573 661.9 691 695 161.5
C 7 247 93471 574.56 691 695 161.5
D 1 52 419609 2477.73 699 678 169.1
D 2 14 182043 1072.67 699 678 169.1
D 12 110 133844 787.6 699 678 169.1

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