ASTROSAT CZTI

Data Quality Report

Orbit 36679

Creation date: 2024-06-27T21:30:10.349031
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_36679cztM0_level2.evt modeM0/AS1T05_041T01_9000005234_36679cztM0_level2_quad_clean.evt
Size (bytes)435,225,600109,160,640
Size415.1 MB 104.1 MB
Events in quadrant A2,735,792735,678
Events in quadrant B3,114,063750,458
Events in quadrant C3,186,745744,567
Events in quadrant D3,779,860699,712

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113943
B0125682
C0125012
D0147972

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A537190.167567%
B5371921.712903%
C53711342.494880%
D53711913.556135%

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 7284 5372 3 3 0.04% 0.06%
B 7284 5372 70 70 0.96% 1.30%
C 7284 5372 97 97 1.33% 1.81%
D 7284 5372 151 151 2.07% 2.81%

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 209597 1617.4 642 629 129.2
A 9 143 27852 210.71 642 629 129.2
A 13 6 13250 97.69 642 629 129.2
B 5 255 350758 2945.54 639 622 118.9
B 0 189 84261 703.62 639 622 118.9
B 0 229 36961 305.7 639 622 118.9
C 0 10 435294 2963.01 638 645 146.7
C 15 214 246515 1676.1 638 645 146.7
C 14 254 7127 44.19 638 645 146.7
D 2 249 313552 2066.51 632 614 151.4
D 13 171 165677 1090.01 632 614 151.4
D 13 249 118299 777.14 632 614 151.4

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