ASTROSAT CZTI

Data Quality Report

Orbit 20230111_T05_074T01_9000005472_level2

Creation date: 2023-01-12T11:10:51.967997
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/AS1T05_074T01_9000005472cztM0_level2.fits modeM0/AS1T05_074T01_9000005472cztM0_level2_quad_clean.evt
Size (bytes)284,575,680260,415,360
Size271.4 MB 248.4 MB
Events in quadrant A1,739,8241,626,804
Events in quadrant B1,648,9001,454,534
Events in quadrant C1,689,1601,495,943
Events in quadrant D1,260,5641,033,979

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0835910
B0939590
C0990190
D01690800

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06760
B06760
C06760
D06760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3309411713.538406%
B3309428098.487943%
C3309418945.723092%
D33094868926.255515%

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 46267 33091 0 0 0.00% 0.00%
B 46267 33091 0 0 0.00% 0.00%
C 46267 33091 0 0 0.00% 0.00%
D 46266 32820 0 0 0.00% 0.00%

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 7 110 1494 9.31 453 427 114.6
A 0 29 1429 8.74 453 427 114.6
A 9 19 1409 8.57 453 427 114.6
B 2 9 1362 10.93 436 415 86.6
B 3 80 1304 10.26 436 415 86.6
B 5 128 1167 8.68 436 415 86.6
C 1 81 1472 9.11 446 418 115.7
C 1 80 1392 8.42 446 418 115.7
C 3 202 1359 8.13 446 418 115.7
D 10 189 939 6.36 359 328 96.0
D 4 160 912 6.08 359 328 96.0
D 7 3 910 6.06 359 328 96.0

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