ASTROSAT CZTI

Data Quality Report

Orbit 42954

Creation date: 2024-06-27T22:46:14.309220
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/AS1T05_143T01_9000005834_42954cztM0_level2.fits modeM0/AS1T05_143T01_9000005834_42954cztM0_level2_quad_clean.evt
Size (bytes)350,046,72080,841,600
Size333.8 MB 77.1 MB
Events in quadrant A3,018,975551,667
Events in quadrant B2,653,841568,693
Events in quadrant C3,183,176527,825
Events in quadrant D3,725,066460,273

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119912
B0111982
C0125892
D0144752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48311312.711654%
B4831761.573173%
C48312615.402608%
D483052310.828157%

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 6954 4832 100 100 1.44% 2.07%
B 6953 4830 65 65 0.93% 1.35%
C 6953 4830 271 271 3.90% 5.61%
D 6952 4829 475 475 6.83% 9.84%

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 546532 5158.19 516 506 105.9
A 15 237 434194 4096.96 516 506 105.9
A 15 222 18698 171.86 516 506 105.9
B 4 171 303207 3007.96 522 508 100.6
B 5 255 247458 2453.98 522 508 100.6
B 3 112 24877 242.16 522 508 100.6
C 12 2 942429 7928.06 511 514 118.8
C 15 214 194077 1629.21 511 514 118.8
C 14 254 49056 408.58 511 514 118.8
D 10 118 1248732 10334.32 493 480 120.8
D 12 233 134744 1111.58 493 480 120.8
D 12 6 115765 954.45 493 480 120.8

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