ASTROSAT CZTI

Data Quality Report

Orbit 40687

Creation date: 2024-06-27T22:19:09.986768
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_029T02_9000005558_40687cztM0_level2.fits modeM0/AS1A12_029T02_9000005558_40687cztM0_level2_quad_clean.evt
Size (bytes)362,937,60093,323,520
Size346.1 MB 89.0 MB
Events in quadrant A3,089,799636,260
Events in quadrant B3,079,247650,036
Events in quadrant C3,072,148629,281
Events in quadrant D3,745,281507,730

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129073
B0129012
C0126672
D0150992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5751150.260824%
B5751530.921579%
C5751280.486872%
D575179113.754130%

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 8857 5753 6 6 0.07% 0.10%
B 8857 5753 34 34 0.38% 0.59%
C 8857 5753 23 23 0.26% 0.40%
D 8857 5753 158 158 1.78% 2.75%

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 514619 3900.0 639 626 131.8
A 12 189 95708 721.45 639 626 131.8
A 3 137 7349 51.01 639 626 131.8
B 5 255 183329 1461.27 637 619 125.0
B 0 229 166444 1326.23 637 619 125.0
B 4 171 109641 871.93 637 619 125.0
C 15 214 254026 1719.06 629 632 147.4
C 14 254 158322 1069.79 629 632 147.4
C 9 187 145086 979.99 629 632 147.4
D 12 227 469813 3201.4 581 564 146.6
D 2 250 253943 1728.65 581 564 146.6
D 2 249 212415 1445.33 581 564 146.6

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