ASTROSAT CZTI

Data Quality Report

Orbit 49866

Creation date: 2024-12-17T04:10:13.168671
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/AS1A13_037T01_9000006440_49866cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49866cztM0_level2_quad_clean.evt
Size (bytes)1,118,525,76035,637,120
Size1.0 GB 34.0 MB
Events in quadrant A12,920,73778,435
Events in quadrant B4,632,072570,907
Events in quadrant C11,964,8819,227
Events in quadrant D11,422,9641,872

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0424862
B0179061
C0396771
D0381181

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5980525187.809365%
B59805048.428094%
C5980590498.729097%
D5980596699.765886%

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 7009 5979 4210 4210 60.07% 70.41%
B 7009 5979 375 375 5.35% 6.27%
C 7009 5979 3471 3471 49.52% 58.05%
D 7009 5979 2085 2085 29.75% 34.87%

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 4 4 9189506 127145.47 269 261 72.3
A 0 98 1290390 17850.66 269 261 72.3
A 8 62 418297 5784.09 269 261 72.3
B 4 206 864283 6588.65 614 594 131.1
B 5 172 558897 4259.02 614 594 131.1
B 0 229 411818 3137.02 614 594 131.1
C 4 111 2965749 54479.08 132 129 54.4
C 15 230 2920698 53651.48 132 129 54.4
C 15 197 1259076 23127.13 132 129 54.4
D 7 61 5628985 188058.71 77 72 29.9
D 8 129 3803116 127057.48 77 72 29.9
D 15 185 491069 16403.91 77 72 29.9

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