ASTROSAT CZTI

Data Quality Report

Orbit 39388

Creation date: 2024-06-27T22:03:58.721651
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_018T01_9000005470_39388cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39388cztM0_level2_quad_clean.evt
Size (bytes)609,952,320169,067,520
Size581.7 MB 161.2 MB
Events in quadrant A4,937,2111,152,299
Events in quadrant B4,432,2841,197,019
Events in quadrant C4,797,9411,130,490
Events in quadrant D7,665,613973,798

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0205423
B0196042
C0201732
D0293462

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9607170.176954%
B9607160.166545%
C9607140.145727%
D96077127.411263%

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 13612 9609 5 5 0.04% 0.05%
B 13612 9609 9 9 0.07% 0.09%
C 13612 9609 8 8 0.06% 0.08%
D 13612 9608 645 645 4.74% 6.71%

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 706987 3248.4 1081 1059 217.3
A 2 79 39739 177.99 1081 1059 217.3
A 13 254 13232 56.02 1081 1059 217.3
B 5 172 126597 617.42 1083 1055 203.3
B 12 111 25761 121.5 1083 1055 203.3
B 5 200 23227 109.04 1083 1055 203.3
C 15 214 415019 1711.95 1055 1062 241.8
C 9 187 207348 853.11 1055 1062 241.8
C 0 10 26330 104.5 1055 1062 241.8
D 12 235 2589495 10538.74 1007 977 245.6
D 2 120 610570 2481.86 1007 977 245.6
D 13 249 444239 1804.67 1007 977 245.6

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter