ASTROSAT CZTI

Data Quality Report

Orbit 41925

Creation date: 2024-06-27T22:34:33.718823
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_118T01_9000005718_41925cztM0_level2.fits modeM0/AS1T05_118T01_9000005718_41925cztM0_level2_quad_clean.evt
Size (bytes)566,804,16074,577,600
Size540.5 MB 71.1 MB
Events in quadrant A3,798,945556,224
Events in quadrant B2,942,607598,347
Events in quadrant C3,143,069541,279
Events in quadrant D10,715,329217,807

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144112
B0118302
C0121032
D0351662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49093326.763088%
B4909861.751884%
C49092585.255653%
D4909317564.677124%

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 7031 4910 240 240 3.41% 4.89%
B 7031 4910 61 61 0.87% 1.24%
C 7031 4910 252 252 3.58% 5.13%
D 7031 4910 3218 3218 45.77% 65.54%

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 14 24 1098660 9922.34 547 536 110.7
A 10 83 539926 4873.78 547 536 110.7
A 13 6 24004 212.05 547 536 110.7
B 0 229 375696 3555.39 554 539 105.5
B 5 255 161696 1527.29 554 539 105.5
B 0 190 90801 855.42 554 539 105.5
C 0 10 753378 6197.62 523 526 121.5
C 15 214 198296 1628.08 523 526 121.5
C 4 254 79937 653.73 523 526 121.5
D 12 79 8615992 97553.57 361 352 88.3
D 13 249 232829 2632.3 361 352 88.3
D 1 52 92226 1040.28 361 352 88.3

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