ASTROSAT CZTI

Data Quality Report

Orbit 41435

Creation date: 2024-06-27T22:28:58.864808
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_035T01_9000005666_41435cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41435cztM0_level2_quad_clean.evt
Size (bytes)329,690,88090,288,000
Size314.4 MB 86.1 MB
Events in quadrant A3,087,590604,161
Events in quadrant B2,831,813615,124
Events in quadrant C3,146,470573,649
Events in quadrant D2,704,969552,411

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125983
B0122842
C0128082
D0119022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5556140.251980%
B5556711.277898%
C55562294.121670%
D5556360.647948%

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 7080 5557 6 6 0.08% 0.11%
B 7080 5557 34 34 0.48% 0.61%
C 7080 5557 223 223 3.15% 4.01%
D 7080 5557 22 22 0.31% 0.40%

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 539979 4215.6 616 600 127.9
A 2 79 55240 427.05 616 600 127.9
A 12 189 54143 418.47 616 600 127.9
B 0 186 268825 2228.56 608 591 120.4
B 0 190 143154 1184.45 608 591 120.4
B 5 252 17540 140.82 608 591 120.4
C 0 10 630309 4547.5 586 586 138.5
C 15 214 227798 1640.79 586 586 138.5
C 15 111 5583 36.08 586 586 138.5
D 13 249 104048 701.88 604 586 147.4
D 1 52 84019 566.01 604 586 147.4
D 13 171 73383 493.85 604 586 147.4

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