ASTROSAT CZTI

Data Quality Report

Orbit 36131

Creation date: 2022-08-10T18:02:04.944944
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_36131cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36131cztM0_level2_quad_clean.evt
Size (bytes)410,359,68050,497,920
Size391.3 MB 48.2 MB
Events in quadrant A2,552,703306,796
Events in quadrant B3,020,359303,267
Events in quadrant C2,963,195299,120
Events in quadrant D3,558,390275,461

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105643
B0119332
C0115702
D0138212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A489460.122599%
B48942294.679199%
C4894721.471189%
D48942895.905190%

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 7018 4895 0 0 0.00% 0.00%
B 7018 4895 138 138 1.97% 2.82%
C 7018 4895 56 56 0.80% 1.14%
D 7018 4895 260 260 3.70% 5.31%

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 162554 1334.61 597 586 121.4
A 15 223 69036 564.03 597 586 121.4
A 13 254 7085 53.55 597 586 121.4
B 5 172 597457 5321.64 588 573 112.2
B 5 255 48557 427.81 588 573 112.2
B 4 232 36774 322.75 588 573 112.2
C 15 214 207904 1540.81 580 584 134.6
C 0 10 191463 1418.62 580 584 134.6
C 0 207 188388 1395.76 580 584 134.6
D 12 17 457553 3237.11 564 548 141.2
D 1 52 279254 1974.16 564 548 141.2
D 13 249 179404 1266.89 564 548 141.2

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