ASTROSAT CZTI

Data Quality Report

Orbit 40302

Creation date: 2024-06-27T22:14:44.120316
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_056T02_9000005538_40302cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40302cztM0_level2_quad_clean.evt
Size (bytes)382,458,24089,769,600
Size364.7 MB 85.6 MB
Events in quadrant A3,151,814624,282
Events in quadrant B2,554,111652,907
Events in quadrant C2,859,939608,475
Events in quadrant D5,213,691492,246

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123203
B0106752
C0113812
D0187702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A48561483.047776%
B4856170.350082%
C4856480.988468%
D485677615.980231%

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 6979 4857 116 116 1.66% 2.39%
B 6979 4857 8 8 0.11% 0.16%
C 6979 4857 38 38 0.54% 0.78%
D 6979 4857 749 749 10.73% 15.42%

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 451485 3846.8 574 565 117.2
A 13 248 355812 3030.62 574 565 117.2
A 2 79 59241 500.57 574 565 117.2
B 4 170 65141 584.95 580 567 110.4
B 7 202 59104 530.27 580 567 110.4
B 6 203 55264 495.48 580 567 110.4
C 14 254 416678 3208.37 561 565 129.7
C 15 214 209718 1612.64 561 565 129.7
C 0 10 42417 322.69 561 565 129.7
D 12 227 2082544 16455.7 519 505 126.5
D 1 47 522993 4129.56 519 505 126.5
D 2 250 440741 3479.47 519 505 126.5

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