ASTROSAT CZTI

Data Quality Report

Orbit 40155

Creation date: 2024-06-27T22:13:00.811432
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/AS1A12_068T02_9000005524_40155cztM0_level2.fits modeM0/AS1A12_068T02_9000005524_40155cztM0_level2_quad_clean.evt
Size (bytes)606,749,76072,745,920
Size578.6 MB 69.4 MB
Events in quadrant A3,191,426599,851
Events in quadrant B2,651,123648,962
Events in quadrant C13,399,82815,806
Events in quadrant D2,810,350571,870

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127123
B0113492
C0434302
D0120492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52232334.461038%
B5223901.723148%
C5223512798.161976%
D5223721.378518%

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 9079 5225 206 206 2.27% 3.94%
B 9079 5225 56 56 0.62% 1.07%
C 9078 5222 5092 5092 56.09% 97.51%
D 9079 5225 65 65 0.72% 1.24%

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 13 248 496953 4226.84 577 566 117.4
A 10 83 418041 3554.89 577 566 117.4
A 6 10 11947 96.91 577 566 117.4
B 5 172 168515 1473.56 594 579 114.0
B 5 255 87901 766.21 594 579 114.0
B 4 171 22341 190.95 594 579 114.0
C 9 187 12428682 242593.14 216 218 51.2
C 15 214 86548 1685.09 216 218 51.2
C 0 10 18612 359.04 216 218 51.2
D 13 249 183926 1299.68 582 569 141.1
D 12 227 101682 716.71 582 569 141.1
D 9 19 62937 442.08 582 569 141.1

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