ASTROSAT CZTI

Data Quality Report

Orbit 33849

Creation date: 2024-06-27T20:53:21.851727
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_065T11_9000004830_33849cztM0_level2.evt modeM0/AS1A11_065T11_9000004830_33849cztM0_level2_quad_clean.evt
Size (bytes)578,134,08075,075,840
Size551.4 MB 71.6 MB
Events in quadrant A3,369,351464,131
Events in quadrant B4,611,396445,364
Events in quadrant C3,483,416464,057
Events in quadrant D5,599,726441,399

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01364
B01364
C01364
D01362

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014390280
B018593403
C014728306
D021754463

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6594260.394298%
B65765448.272506%
C6580250.379939%
D65632834.312052%

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 9358 6655 4 4 0.04% 0.06%
B 9358 6630 362 362 3.87% 5.46%
C 9358 6628 19 19 0.20% 0.29%
D 9358 6621 141 141 1.51% 2.13%

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 15 169 343389 2185.73 775 758 156.8
A 13 6 17980 109.86 775 758 156.8
A 13 254 11310 67.31 775 758 156.8
B 5 172 1446908 10156.31 742 723 142.4
B 15 85 109864 766.48 742 723 142.4
B 5 255 35611 245.01 742 723 142.4
C 15 214 285574 1653.37 749 756 172.3
C 0 10 80795 464.63 749 756 172.3
C 4 254 74175 426.2 749 756 172.3
D 8 195 1450861 7998.43 742 721 181.3
D 2 249 392363 2160.15 742 721 181.3
D 12 235 372025 2047.97 742 721 181.3

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