ASTROSAT CZTI

Data Quality Report

Orbit 48434

Creation date: 2024-09-11T16:41:23.295125
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/AS1A13_029T01_9000006426_48434cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48434cztM0_level2_quad_clean.evt
Size (bytes)472,544,640105,863,040
Size450.7 MB 101.0 MB
Events in quadrant A7,375,039680,858
Events in quadrant B3,237,093730,352
Events in quadrant C2,992,062701,164
Events in quadrant D3,379,490636,650

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0272651
B0141301
C0136551
D0147211

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65484937.529016%
B65491271.939227%
C6549661.007787%
D65491422.168270%

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 7538 6549 220 220 2.92% 3.36%
B 7539 6550 13 13 0.17% 0.20%
C 7539 6550 7 7 0.09% 0.11%
D 7539 6550 69 69 0.92% 1.05%

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 10 83 3833089 25385.3 725 711 151.0
A 13 248 722655 4782.09 725 711 151.0
A 13 254 13821 86.84 725 711 151.0
B 12 16 254027 1754.89 731 710 144.3
B 8 234 24049 161.68 731 710 144.3
B 12 111 18579 123.79 731 710 144.3
C 12 2 104133 606.31 724 728 170.5
C 15 208 26955 153.78 724 728 170.5
C 14 254 13795 76.62 724 728 170.5
D 12 233 256276 1386.94 728 705 184.3
D 5 222 53762 287.93 728 705 184.3
D 13 171 51127 273.63 728 705 184.3

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