ASTROSAT CZTI

Data Quality Report

Orbit 40921

Creation date: 2024-06-27T22:22:14.631382
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_044T19_9000005580_40921cztM0_level2.fits modeM0/AS1A12_044T19_9000005580_40921cztM0_level2_quad_clean.evt
Size (bytes)304,663,68089,642,880
Size290.5 MB 85.5 MB
Events in quadrant A2,870,050606,460
Events in quadrant B2,388,775619,002
Events in quadrant C2,603,932579,825
Events in quadrant D3,001,214537,539

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117273
B0107122
C0110492
D0125032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5307130.244959%
B530770.131901%
C5307340.640663%
D5307681.281327%

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 7069 5308 0 0 0.00% 0.00%
B 7069 5308 0 0 0.00% 0.00%
C 7069 5308 30 30 0.42% 0.57%
D 7069 5308 57 57 0.81% 1.07%

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 480257 3794.41 608 596 126.4
A 12 189 17613 134.61 608 596 126.4
A 13 254 8818 65.04 608 596 126.4
B 5 255 24233 199.77 600 583 118.4
B 12 111 14841 120.44 600 583 118.4
B 11 111 13668 110.53 600 583 118.4
C 15 214 225620 1659.36 581 585 135.6
C 0 10 95653 701.01 581 585 135.6
C 14 254 13629 96.18 581 585 135.6
D 2 249 174090 1207.78 586 569 143.7
D 12 233 115905 802.79 586 569 143.7
D 13 249 89423 618.46 586 569 143.7

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