ASTROSAT CZTI

Data Quality Report

Orbit 38840

Creation date: 2024-06-27T21:57:06.824446
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_077T06_9000005408_38840cztM0_level2.fits modeM0/AS1A12_077T06_9000005408_38840cztM0_level2_quad_clean.evt
Size (bytes)317,168,64091,172,160
Size302.5 MB 86.9 MB
Events in quadrant A2,687,601615,869
Events in quadrant B2,371,632639,074
Events in quadrant C2,453,084607,110
Events in quadrant D3,826,114537,675

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111793
B0105492
C0104662
D0150082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5159130.251987%
B515990.174452%
C515920.038767%
D51592084.031789%

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 7281 5160 5 5 0.07% 0.10%
B 7281 5160 2 2 0.03% 0.04%
C 7281 5160 0 0 0.00% 0.00%
D 7281 5160 202 202 2.77% 3.91%

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 384643 3295.33 577 566 116.6
A 9 143 33075 278.92 577 566 116.6
A 13 248 22013 184.01 577 566 116.6
B 0 190 37144 327.4 579 565 111.7
B 0 230 17718 153.53 579 565 111.7
B 12 111 13778 118.26 579 565 111.7
C 15 214 214926 1635.68 566 569 131.1
C 3 233 17522 129.36 566 569 131.1
C 0 10 7981 56.56 566 569 131.1
D 12 227 457133 3387.62 549 532 134.8
D 2 249 414958 3074.71 549 532 134.8
D 5 222 205631 1521.67 549 532 134.8

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