ASTROSAT CZTI

Data Quality Report

Orbit 40099

Creation date: 2024-06-27T22:12:19.909940
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_004T01_9000005520_40099cztM0_level2.fits modeM0/AS1A12_004T01_9000005520_40099cztM0_level2_quad_clean.evt
Size (bytes)335,767,68085,723,200
Size320.2 MB 81.8 MB
Events in quadrant A2,562,749578,153
Events in quadrant B2,341,886611,418
Events in quadrant C3,579,823569,800
Events in quadrant D3,570,045499,011

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106043
B0101092
C0137702
D0140022

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0430
C0430
D0430

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4811150.311785%
B481150.103928%
C48111212.515070%
D48112986.194138%

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 9058 4813 8 8 0.09% 0.17%
B 9058 4813 0 0 0.00% 0.00%
C 9058 4813 144 144 1.59% 2.99%
D 9058 4813 295 295 3.26% 6.13%

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 414489 3746.96 541 532 110.5
A 13 248 16052 140.48 541 532 110.5
A 9 143 15751 137.76 541 532 110.5
B 0 189 147952 1420.44 546 533 103.8
B 10 246 31488 298.26 546 533 103.8
B 4 171 13578 125.69 546 533 103.8
C 9 187 1175232 9535.6 529 533 123.2
C 15 214 201610 1632.24 529 533 123.2
C 0 10 100237 809.35 529 533 123.2
D 12 227 1209325 9731.57 508 494 124.2
D 12 218 168778 1354.75 508 494 124.2
D 9 19 78348 626.76 508 494 124.2

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