ASTROSAT CZTI

Data Quality Report

Orbit 20160422_G05_237T03_9000000426_level2

Creation date: 2025-10-29T16:47:42.379069
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_237T03_9000000426cztM0_level2.fits modeM0/AS1G05_237T03_9000000426cztM0_level2_quad_clean.evt
Size (bytes)1,492,951,6801,737,218,880
Size1.4 GB 1.6 GB
Events in quadrant A8,995,64010,814,370
Events in quadrant B8,378,44010,395,619
Events in quadrant C8,693,51810,260,727
Events in quadrant D7,513,3869,522,182

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03430
B03430
C03430
D03430

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03703740
B04103550
C04128050
D04121000

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A034600
B034600
C034600
D034600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16967930181.778653%
B16965586325.087973%
C16965058513.448865%
D16967155253.256302%

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 204458 169703 0 0 0.00% 0.00%
B 204458 165795 0 0 0.00% 0.00%
C 204458 169524 0 0 0.00% 0.00%
D 204458 169687 0 0 0.00% 0.00%

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 0 29 7994 9.59 2341 2182 606.2
A 7 110 7930 9.48 2341 2182 606.2
A 9 19 7008 7.96 2341 2182 606.2
B 2 9 7450 12.1 2220 2119 440.6
B 12 226 6748 10.51 2220 2119 440.6
B 5 128 5919 8.62 2220 2119 440.6
C 1 80 7025 7.97 2302 2126 614.9
C 1 81 6976 7.89 2302 2126 614.9
C 9 188 5970 6.25 2302 2126 614.9
D 3 14 5750 6.6 2152 1952 575.5
D 6 44 5682 6.48 2152 1952 575.5
D 6 231 5652 6.43 2152 1952 575.5

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