ASTROSAT CZTI

Data Quality Report

Orbit 41319

Creation date: 2024-06-27T22:27:30.045586
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_025T15_9000005648_41319cztM0_level2.fits modeM0/AS1A12_025T15_9000005648_41319cztM0_level2_quad_clean.evt
Size (bytes)386,850,240104,578,560
Size368.9 MB 99.7 MB
Events in quadrant A3,427,481707,995
Events in quadrant B3,107,731728,260
Events in quadrant C3,666,588664,223
Events in quadrant D3,621,804621,207

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137723
B0135592
C0146062
D0151602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6377150.235220%
B6377120.188176%
C63772564.014427%
D63771742.728556%

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 9873 6379 6 6 0.06% 0.09%
B 9873 6379 4 4 0.04% 0.06%
C 9873 6379 244 244 2.47% 3.83%
D 9873 6379 178 178 1.80% 2.79%

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 569874 3834.49 715 701 148.4
A 12 189 57429 382.17 715 701 148.4
A 2 79 23011 150.3 715 701 148.4
B 0 190 151335 1094.01 707 688 137.7
B 0 229 109468 789.97 707 688 137.7
B 0 186 21316 149.8 707 688 137.7
C 0 10 766370 4823.19 674 679 158.8
C 15 214 267316 1679.58 674 679 158.8
C 14 67 4516 24.17 674 679 158.8
D 13 249 248494 1450.45 687 668 170.9
D 2 249 237043 1383.43 687 668 170.9
D 2 120 178642 1041.63 687 668 170.9

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