ASTROSAT CZTI

Data Quality Report

Orbit 45965

Creation date: 2024-06-27T23:18:16.208159
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_017T01_9000006148_45965cztM0_level2.fits modeM0/AS1A13_017T01_9000006148_45965cztM0_level2_quad_clean.evt
Size (bytes)444,142,08075,758,400
Size423.6 MB 72.2 MB
Events in quadrant A4,075,520523,994
Events in quadrant B7,091,010428,025
Events in quadrant C2,212,853528,648
Events in quadrant D2,692,465479,365

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153992
B0243931
C0101921
D0114191

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A47511022.146916%
B4751132127.804673%
C4751541.136603%
D4751901.894338%

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 5911 4752 38 38 0.64% 0.80%
B 5911 4751 1028 1028 17.39% 21.64%
C 5911 4752 41 41 0.69% 0.86%
D 5911 4752 55 55 0.93% 1.16%

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 1989610 18318.02 521 511 108.6
A 7 3 52769 481.25 521 511 108.6
A 13 254 7106 60.73 521 511 108.6
B 3 112 5114450 53888.79 482 467 94.9
B 15 54 30696 318.54 482 467 94.9
B 5 172 14688 149.85 482 467 94.9
C 14 254 175368 1422.17 519 523 122.9
C 5 250 6220 46.34 519 523 122.9
C 13 61 3543 24.56 519 523 122.9
D 11 241 327943 2547.85 511 496 128.5
D 2 249 110385 855.04 511 496 128.5
D 1 52 95793 741.5 511 496 128.5

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