ASTROSAT CZTI

Data Quality Report

Orbit 48576

Creation date: 2024-09-21T06:04:17.172678
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_037T01_9000006436_48576cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48576cztM0_level2_quad_clean.evt
Size (bytes)467,683,200104,091,840
Size446.0 MB 99.3 MB
Events in quadrant A6,603,771677,334
Events in quadrant B2,840,259737,523
Events in quadrant C2,723,762704,425
Events in quadrant D4,646,580585,297

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0237182
B0131882
C0130512
D0184702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64132894.506471%
B6413420.654920%
C6413150.233900%
D64134436.907843%

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 7548 6414 173 173 2.29% 2.70%
B 7548 6414 1 1 0.01% 0.02%
C 7548 6414 0 0 0.00% 0.00%
D 7548 6414 358 358 4.74% 5.58%

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 3853041 27377.1 681 667 140.7
A 13 248 75743 533.53 681 667 140.7
A 0 31 35992 251.04 681 667 140.7
B 5 255 40178 290.93 698 675 135.8
B 12 18 27915 200.61 698 675 135.8
B 12 111 17362 122.89 698 675 135.8
C 12 250 31580 189.76 690 694 162.8
C 13 61 4524 23.53 690 694 162.8
C 14 254 3688 18.4 690 694 162.8
D 2 165 1513469 9312.26 648 629 162.5
D 13 171 468985 2882.96 648 629 162.5
D 12 128 126275 773.41 648 629 162.5

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