ASTROSAT CZTI

Data Quality Report

Orbit 38808

Creation date: 2024-06-27T21:56:43.185192
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_061T07_9000005402_38808cztM0_level2.fits modeM0/AS1A12_061T07_9000005402_38808cztM0_level2_quad_clean.evt
Size (bytes)212,428,80059,552,640
Size202.6 MB 56.8 MB
Events in quadrant A1,765,717407,720
Events in quadrant B1,796,004417,446
Events in quadrant C1,643,982391,118
Events in quadrant D2,402,090355,713

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0660
B0660
C0660
D0660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A071352
B073381
C066851
D094481

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A326590.275651%
B3265742.266462%
C326570.214395%
D3265702.143951%

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 5237 3266 2 2 0.04% 0.06%
B 5237 3266 43 43 0.82% 1.32%
C 5237 3266 2 2 0.04% 0.06%
D 5237 3266 59 59 1.13% 1.81%

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 217256 2734.35 386 378 79.3
A 12 16 22598 280.14 386 378 79.3
A 13 248 17099 210.81 386 378 79.3
B 5 184 182587 2462.16 384 374 74.0
B 4 170 38304 512.53 384 374 74.0
B 0 230 31490 420.46 384 374 74.0
C 15 214 142469 1581.74 381 384 89.8
C 0 10 14132 153.05 381 384 89.8
C 13 61 2514 23.71 381 384 89.8
D 2 16 399601 4427.59 372 362 90.2
D 12 235 188670 2088.35 372 362 90.2
D 12 227 171984 1903.3 372 362 90.2

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