ASTROSAT CZTI

Data Quality Report

Orbit 51897

Creation date: 2025-05-03T01:07:11.092064
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/AS1C09_011T05_9000006466_51897cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51897cztM0_level2_quad_clean.evt
Size (bytes)691,416,00083,597,760
Size659.4 MB 79.7 MB
Events in quadrant A4,374,042610,115
Events in quadrant B3,941,678655,557
Events in quadrant C4,374,906583,503
Events in quadrant D12,404,256233,357

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0173291
B0161511
C0173861
D0413211

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64331101.709933%
B64331302.020830%
C64332764.290378%
D6433411063.889321%

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 7308 6434 64 64 0.88% 0.99%
B 7308 6434 62 62 0.85% 0.96%
C 7308 6434 228 228 3.12% 3.54%
D 7308 6434 3483 3483 47.66% 54.13%

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 12 3 427720 2544.61 676 660 167.8
A 4 3 288409 1714.53 676 660 167.8
A 15 174 186128 1105.1 676 660 167.8
B 10 254 410648 2890.73 672 649 141.8
B 12 32 141053 989.93 672 649 141.8
B 8 128 126126 884.69 672 649 141.8
C 10 171 600531 3273.6 661 656 183.2
C 15 230 272990 1486.16 661 656 183.2
C 13 3 260325 1417.05 661 656 183.2
D 6 42 5995298 45339.02 421 405 132.2
D 11 129 3495332 26431.93 421 405 132.2
D 12 17 492327 3720.38 421 405 132.2

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