ASTROSAT CZTI

Data Quality Report

Orbit 37489

Creation date: 2024-06-27T21:40:40.996576
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/AS1C07_001T11_9000005326_37489cztM0_level2.evt modeM0/AS1C07_001T11_9000005326_37489cztM0_level2_quad_clean.evt
Size (bytes)546,802,56096,200,640
Size521.5 MB 91.7 MB
Events in quadrant A4,039,719649,945
Events in quadrant B4,578,128631,014
Events in quadrant C2,937,292665,852
Events in quadrant D4,648,311597,294

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155013
B0172832
C0121172
D0175642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52611232.337959%
B526173213.913705%
C52611282.432998%
D526171813.647596%

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 7083 5262 108 108 1.52% 2.05%
B 7083 5262 585 585 8.26% 11.12%
C 7083 5262 114 114 1.61% 2.17%
D 7083 5262 683 683 9.64% 12.98%

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 15 222 1063852 9120.14 580 568 116.6
A 10 83 302374 2588.69 580 568 116.6
A 13 248 260143 2226.46 580 568 116.6
B 5 172 1413218 13449.89 558 544 105.0
B 5 255 462672 4399.86 558 544 105.0
B 15 35 375452 3569.45 558 544 105.0
C 15 214 222884 1656.59 577 582 134.2
C 14 254 221617 1647.15 577 582 134.2
C 0 10 171322 1272.35 577 582 134.2
D 13 249 992821 7511.5 545 530 132.1
D 12 227 872635 6601.71 545 530 132.1
D 2 250 284413 2148.95 545 530 132.1

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