ASTROSAT CZTI

Data Quality Report

Orbit 41323

Creation date: 2024-06-27T22:27:33.007547
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_025T16_9000005650_41323cztM0_level2.fits modeM0/AS1A12_025T16_9000005650_41323cztM0_level2_quad_clean.evt
Size (bytes)353,116,80094,953,600
Size336.8 MB 90.6 MB
Events in quadrant A3,052,032642,073
Events in quadrant B2,996,659651,134
Events in quadrant C3,025,660605,019
Events in quadrant D3,541,402568,803

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126681
B0128501
C0127101
D0146091

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5848110.188098%
B5848601.025992%
C58481332.274282%
D58481462.496580%

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 7190 5849 3 3 0.04% 0.05%
B 7190 5849 36 36 0.50% 0.62%
C 7190 5849 118 118 1.64% 2.02%
D 7190 5849 126 126 1.75% 2.15%

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 508628 3767.23 646 631 134.8
A 12 189 26310 190.43 646 631 134.8
A 2 79 22173 159.75 646 631 134.8
B 5 255 345193 2731.98 637 618 126.1
B 0 190 88181 694.25 637 618 126.1
B 5 252 30566 237.44 637 618 126.1
C 0 10 350124 2392.47 622 626 146.1
C 15 214 248311 1695.51 622 626 146.1
C 13 61 4020 23.23 622 626 146.1
D 2 249 391042 2531.72 624 606 154.2
D 2 120 172411 1114.04 624 606 154.2
D 5 222 159071 1027.54 624 606 154.2

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