ASTROSAT CZTI

Data Quality Report

Orbit 38782

Creation date: 2024-06-27T21:56:20.608305
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/AS1A12_051T01_9000005394_38782cztM0_level2.fits modeM0/AS1A12_051T01_9000005394_38782cztM0_level2_quad_clean.evt
Size (bytes)306,273,60087,837,120
Size292.1 MB 83.8 MB
Events in quadrant A2,860,887585,514
Events in quadrant B2,906,242605,742
Events in quadrant C2,534,959585,230
Events in quadrant D2,647,673535,230

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114073
B0118522
C0102532
D0112352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4970931.871227%
B49701793.601610%
C4970100.201207%
D4970290.583501%

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 7063 4971 79 79 1.12% 1.59%
B 7063 4971 109 109 1.54% 2.19%
C 7063 4971 5 5 0.07% 0.10%
D 7063 4971 28 28 0.40% 0.56%

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 374225 3252.68 569 559 114.9
A 7 3 246748 2143.02 569 559 114.9
A 15 223 32857 281.15 569 559 114.9
B 4 171 649383 5905.58 567 551 109.9
B 12 111 13613 118.89 567 551 109.9
B 11 111 12617 109.82 567 551 109.9
C 15 214 221898 1666.28 570 575 132.8
C 0 239 39722 294.73 570 575 132.8
C 0 10 25892 190.6 570 575 132.8
D 5 222 186427 1347.91 563 544 137.9
D 2 16 124062 895.67 563 544 137.9
D 10 118 89067 641.91 563 544 137.9

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