ASTROSAT CZTI

Data Quality Report

Orbit 36063

Creation date: 2024-06-27T21:21:54.336935
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_36063cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36063cztM0_level2_quad_clean.evt
Size (bytes)1,911,303,360205,352,640
Size1.8 GB 195.8 MB
Events in quadrant A6,956,3751,435,011
Events in quadrant B10,365,2081,400,165
Events in quadrant C28,284,5021,057,951
Events in quadrant D11,300,0301,317,578

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0297704
B0401233
C0941653
D0434163

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0470

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02980
B02980
C02980
D02980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14573190.130378%
B145739706.656145%
C14573762052.288479%
D145737585.201400%

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 19352 14576 8 8 0.04% 0.05%
B 19352 14576 692 692 3.58% 4.75%
C 19351 14574 7635 7635 39.46% 52.39%
D 19352 14576 708 708 3.66% 4.86%

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 370669 1096.95 1676 1647 336.4
A 9 143 40246 114.74 1676 1647 336.4
A 13 6 35129 99.53 1676 1647 336.4
B 5 236 2560390 8373.5 1611 1571 305.6
B 5 172 526771 1718.67 1611 1571 305.6
B 0 213 401040 1307.23 1611 1571 305.6
C 9 187 22371212 78661.2 1227 1235 284.4
C 15 214 469580 1646.88 1227 1235 284.4
C 9 203 356848 1250.47 1227 1235 284.4
D 12 227 1396945 3583.71 1592 1549 389.4
D 12 6 1275114 3270.82 1592 1549 389.4
D 7 223 756229 1938.2 1592 1549 389.4

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