ASTROSAT CZTI

Data Quality Report

Orbit 40303

Creation date: 2024-06-27T22:14:45.171956
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_056T02_9000005538_40303cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40303cztM0_level2_quad_clean.evt
Size (bytes)360,224,64088,447,680
Size343.5 MB 84.4 MB
Events in quadrant A2,998,519609,784
Events in quadrant B2,923,186619,466
Events in quadrant C2,566,298594,240
Events in quadrant D4,460,768507,435

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118693
B0118382
C0105562
D0166702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49511322.666128%
B49511472.969097%
C4951300.605938%
D49514859.796001%

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 7043 4952 98 98 1.39% 1.98%
B 7043 4952 112 112 1.59% 2.26%
C 7043 4952 16 16 0.23% 0.32%
D 7043 4952 464 464 6.59% 9.37%

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 445133 3823.99 564 553 116.3
A 13 248 293189 2517.06 564 553 116.3
A 12 189 42610 361.75 564 553 116.3
B 5 255 365440 3376.77 563 549 108.1
B 7 202 190420 1757.1 563 549 108.1
B 4 171 79235 728.17 563 549 108.1
C 15 214 215029 1647.52 554 560 130.2
C 14 254 147505 1128.81 554 560 130.2
C 0 10 30375 229.04 554 560 130.2
D 12 227 1380755 10760.75 527 513 128.3
D 1 47 609849 4750.55 527 513 128.3
D 2 250 282761 2200.48 527 513 128.3

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