ASTROSAT CZTI

Data Quality Report

Orbit 02973

Creation date: 2024-06-27T14:22:56.389447
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/AS1G05_238T04_9000000416_02973cztM0_level2.evt modeM0/AS1G05_238T04_9000000416_02973cztM0_level2_common_clean.evt
Size (bytes)376,153,92054,768,960
Size358.7 MB 52.2 MB
Events in quadrant A3,252,126317,522
Events in quadrant B2,383,593323,095
Events in quadrant C2,268,676330,051
Events in quadrant D3,128,468319,286

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133843
B0111722
C0108162
D0132652

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52791051.989013%
B5279410.776662%
C5279150.284145%
D5279370.700890%

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 7405 5280 100 100 1.35% 1.89%
B 7405 5280 24 24 0.32% 0.45%
C 7405 5280 8 8 0.11% 0.15%
D 7405 5280 36 36 0.49% 0.68%

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 9 998140 9236.63 528 517 108.0
A 14 63 68888 633.02 528 517 108.0
A 0 31 65703 603.53 528 517 108.0
B 0 219 83256 771.65 547 534 107.2
B 3 27 71809 664.87 547 534 107.2
B 5 70 56319 520.38 547 534 107.2
C 15 208 70819 565.12 527 530 124.4
C 1 192 47204 375.25 527 530 124.4
C 1 16 35360 280.03 527 530 124.4
D 2 209 558268 4512.13 515 502 123.6
D 13 114 336699 2719.72 515 502 123.6
D 14 81 81721 657.03 515 502 123.6

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
Veto Counter