ASTROSAT CZTI

Data Quality Report

Orbit 36044

Creation date: 2022-08-10T00:21:57.132355
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_36044cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36044cztM0_level2_quad_clean.evt
Size (bytes)403,462,08046,808,640
Size384.8 MB 44.6 MB
Events in quadrant A2,630,606268,664
Events in quadrant B2,846,167273,991
Events in quadrant C3,126,044269,426
Events in quadrant D3,271,504249,291

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106503
B0113842
C0121092
D0129102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5075100.197044%
B5075380.748768%
C50751042.049261%
D50751462.876847%

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 7198 5076 0 0 0.00% 0.00%
B 7198 5076 22 22 0.31% 0.43%
C 7198 5076 83 83 1.15% 1.64%
D 7198 5076 121 121 1.68% 2.38%

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 167206 1318.55 630 619 126.3
A 13 6 11180 83.59 630 619 126.3
A 0 31 9403 69.53 630 619 126.3
B 5 236 142518 1194.7 631 616 118.8
B 5 172 74217 619.66 631 616 118.8
B 0 189 43429 360.45 631 616 118.8
C 0 207 245702 1734.28 613 618 141.3
C 15 214 211890 1495.01 613 618 141.3
C 0 10 183544 1294.43 613 618 141.3
D 12 6 563573 3798.92 609 593 148.2
D 10 118 150308 1010.26 609 593 148.2
D 13 249 67559 451.88 609 593 148.2

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