ASTROSAT CZTI

Data Quality Report

Orbit 40422

Creation date: 2024-06-27T22:15:55.303009
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_022T01_9000005540_40422cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40422cztM0_level2_quad_clean.evt
Size (bytes)327,695,04092,494,080
Size312.5 MB 88.2 MB
Events in quadrant A2,981,819624,461
Events in quadrant B2,626,770639,010
Events in quadrant C2,606,312617,603
Events in quadrant D3,469,489520,024

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126113
B0118452
C0115452
D0144012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5715140.244969%
B5715120.209974%
C571570.122485%
D571562310.901137%

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 7057 5716 5 5 0.07% 0.09%
B 7057 5716 3 3 0.04% 0.05%
C 7057 5716 2 2 0.03% 0.03%
D 7057 5716 135 135 1.91% 2.36%

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 485646 3934.81 607 595 123.3
A 2 79 119260 962.63 607 595 123.3
A 13 248 28574 226.97 607 595 123.3
B 4 170 118566 1002.14 606 591 117.7
B 5 255 54752 460.07 606 591 117.7
B 0 230 31821 265.28 606 591 117.7
C 15 214 248032 1783.57 596 602 138.7
C 14 254 22908 160.79 596 602 138.7
C 3 233 7339 48.56 596 602 138.7
D 12 227 575583 4119.99 564 549 139.6
D 2 250 220061 1572.75 564 549 139.6
D 9 19 201564 1440.23 564 549 139.6

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