ASTROSAT CZTI

Data Quality Report

Orbit 41425

Creation date: 2024-06-27T22:28:50.963949
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_41425cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41425cztM0_level2_quad_clean.evt
Size (bytes)1,015,594,560245,594,880
Size968.5 MB 234.2 MB
Events in quadrant A8,214,8041,640,079
Events in quadrant B7,397,0501,674,878
Events in quadrant C8,276,0031,582,850
Events in quadrant D12,501,3811,464,802

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0332455
B0325104
C0342094
D0478514

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0570
B0570
C0570
D0570

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15565330.212014%
B15565710.456152%
C155653772.422101%
D155657234.645037%

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 21116 15569 10 10 0.05% 0.06%
B 21116 15569 28 28 0.13% 0.18%
C 21116 15569 367 367 1.74% 2.36%
D 21116 15569 649 649 3.07% 4.17%

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 1378407 3873.17 1731 1688 355.5
A 13 248 107727 298.32 1731 1688 355.5
A 13 254 25247 66.28 1731 1688 355.5
B 5 255 234903 707.71 1713 1662 329.6
B 0 190 212196 638.81 1713 1662 329.6
B 0 186 156104 468.62 1713 1662 329.6
C 0 10 1049236 2700.52 1666 1677 387.9
C 15 214 672377 1729.01 1666 1677 387.9
C 15 111 42004 103.96 1666 1677 387.9
D 1 52 2456011 5961.72 1672 1622 411.7
D 12 79 2042219 4956.62 1672 1622 411.7
D 5 222 491787 1190.61 1672 1622 411.7

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