ASTROSAT CZTI

Data Quality Report

Orbit 34285

Creation date: 2022-01-30T17:01:13.037034
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/AS1T04_086T01_9000004890_34285cztM0_level2.evt modeM0/AS1T04_086T01_9000004890_34285cztM0_level2_quad_clean.evt
Size (bytes)393,004,80071,297,280
Size374.8 MB 68.0 MB
Events in quadrant A2,031,482464,974
Events in quadrant B2,942,605464,682
Events in quadrant C2,320,202472,426
Events in quadrant D4,299,491437,770

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A091082
B0116751
C096091
D0158881

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A453440.088222%
B45341242.734892%
C4534210.463167%
D45341553.418615%

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 4534 4534 0 0 0.00% 0.00%
B 4534 4534 86 86 1.90% 1.90%
C 4534 4534 12 12 0.26% 0.26%
D 4534 4534 143 143 3.15% 3.15%

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 9145 82.74 516 505 104.4
A 13 254 8658 78.08 516 505 104.4
A 13 6 6788 60.17 516 505 104.4
B 5 172 477685 4851.17 508 494 98.4
B 4 251 204366 2072.58 508 494 98.4
B 0 245 127911 1295.33 508 494 98.4
C 15 214 192981 1640.25 505 510 117.3
C 14 254 71577 605.64 505 510 117.3
C 0 10 20939 174.1 505 510 117.3
D 8 195 953294 7776.04 501 488 122.5
D 12 235 351739 2866.63 501 488 122.5
D 8 230 335163 2731.35 501 488 122.5

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