ASTROSAT CZTI

Data Quality Report

Orbit 40985

Creation date: 2024-06-27T22:23:00.886395
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_066T01_9000005584_40985cztM0_level2.fits modeM0/AS1A12_066T01_9000005584_40985cztM0_level2_quad_clean.evt
Size (bytes)304,119,36087,603,840
Size290.0 MB 83.5 MB
Events in quadrant A2,783,073596,145
Events in quadrant B2,335,160601,152
Events in quadrant C2,648,337564,397
Events in quadrant D3,082,504524,442

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114673
B0106582
C0111422
D0128292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5236110.210084%
B523690.171887%
C5236651.241406%
D5236961.833461%

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 7089 5237 5 5 0.07% 0.10%
B 7089 5237 4 4 0.06% 0.08%
C 7089 5237 66 66 0.93% 1.26%
D 7089 5237 101 101 1.42% 1.93%

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 481115 4049.3 579 568 118.7
A 12 189 59816 499.25 579 568 118.7
A 13 254 7804 60.97 579 568 118.7
B 5 255 66937 589.84 574 557 112.5
B 12 111 14202 121.25 574 557 112.5
B 11 111 13172 112.09 574 557 112.5
C 15 214 223862 1685.21 564 568 132.5
C 0 10 199325 1500.03 564 568 132.5
C 12 249 12500 90.05 564 568 132.5
D 13 249 476186 3483.57 560 543 136.5
D 2 249 200916 1467.51 560 543 136.5
D 12 233 90398 658.09 560 543 136.5

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