ASTROSAT CZTI

Data Quality Report

Orbit 36085

Creation date: 2022-08-10T07:19:19.381556
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/AS1T04_069T01_9000005158_36085cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36085cztM0_level2_quad_clean.evt
Size (bytes)451,926,72063,368,640
Size431.0 MB 60.4 MB
Events in quadrant A2,531,453403,963
Events in quadrant B2,636,550410,175
Events in quadrant C4,532,841372,045
Events in quadrant D3,636,244371,374

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107843
B0110122
C0169912
D0141642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A515490.174622%
B5154260.504463%
C51544148.032596%
D51542274.404346%

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 7036 5155 1 1 0.01% 0.02%
B 7036 5155 14 14 0.20% 0.27%
C 7036 5155 350 350 4.97% 6.79%
D 7036 5155 228 228 3.24% 4.42%

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 168899 1387.27 604 594 121.3
A 13 6 10618 82.62 604 594 121.3
A 9 143 8137 62.17 604 594 121.3
B 0 190 77188 652.38 604 588 117.4
B 5 255 63411 535.05 604 588 117.4
B 5 172 41711 350.24 604 588 117.4
C 10 49 1732701 13020.1 570 576 133.0
C 0 10 247796 1858.31 570 576 133.0
C 15 214 209734 1572.21 570 576 133.0
D 12 233 510240 3633.03 571 554 140.3
D 12 6 493832 3516.07 571 554 140.3
D 10 118 160034 1136.77 571 554 140.3

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