ASTROSAT CZTI

Data Quality Report

Orbit 41416

Creation date: 2024-06-27T22:28:44.853292
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_41416cztM0_level2.fits modeM0/AS1A12_035T01_9000005666_41416cztM0_level2_quad_clean.evt
Size (bytes)326,252,16090,489,600
Size311.1 MB 86.3 MB
Events in quadrant A2,945,285622,018
Events in quadrant B2,386,447641,333
Events in quadrant C3,165,202572,415
Events in quadrant D3,192,376556,028

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116553
B0101972
C0122312
D0126592

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4974380.763973%
B497470.140732%
C49742735.488540%
D4974921.849618%

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 7036 4975 21 21 0.30% 0.42%
B 7036 4975 2 2 0.03% 0.04%
C 7036 4975 261 261 3.71% 5.25%
D 7036 4975 72 72 1.02% 1.45%

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 484063 3994.18 589 577 121.0
A 2 79 118672 975.61 589 577 121.0
A 13 248 40430 329.23 589 577 121.0
B 0 190 38744 339.27 589 573 112.5
B 12 111 13984 119.2 589 573 112.5
B 5 255 13964 119.02 589 573 112.5
C 0 10 683577 5224.4 562 566 130.7
C 15 214 214569 1636.92 562 566 130.7
C 15 111 47648 360.13 562 566 130.7
D 2 249 249259 1765.83 579 564 140.8
D 5 222 210676 1491.87 579 564 140.8
D 13 249 205306 1453.75 579 564 140.8

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