ASTROSAT CZTI

Data Quality Report

Orbit 36680

Creation date: 2024-06-27T21:30:11.418767
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_041T01_9000005234_36680cztM0_level2.evt modeM0/AS1T05_041T01_9000005234_36680cztM0_level2_quad_clean.evt
Size (bytes)482,883,840107,559,360
Size460.5 MB 102.6 MB
Events in quadrant A2,730,557742,594
Events in quadrant B4,915,634678,037
Events in quadrant C3,179,119758,812
Events in quadrant D3,446,946714,515

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111483
B0178262
C0124132
D0135372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5182110.212273%
B5182109821.188730%
C51821232.373601%
D51821643.164801%

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 7215 5183 3 3 0.04% 0.06%
B 7215 5183 802 802 11.12% 15.47%
C 7215 5183 77 77 1.07% 1.49%
D 7215 5183 149 149 2.07% 2.87%

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 203839 1609.85 638 627 126.2
A 9 143 49217 384.93 638 627 126.2
A 13 254 8587 63.06 638 627 126.2
B 5 255 1887020 17724.79 571 556 106.4
B 0 229 685626 6436.76 571 556 106.4
B 0 190 45212 419.58 571 556 106.4
C 0 10 437697 3009.23 637 643 145.2
C 15 214 237188 1628.68 637 643 145.2
C 14 254 12844 84.01 637 643 145.2
D 13 36 430593 2872.03 633 618 149.7
D 2 249 131530 874.43 633 618 149.7
D 13 171 110468 733.75 633 618 149.7

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