ASTROSAT CZTI

Data Quality Report

Orbit 39547

Creation date: 2024-06-27T22:05:58.200493
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_018T01_9000005488_39547cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39547cztM0_level2_quad_clean.evt
Size (bytes)379,897,92091,716,480
Size362.3 MB 87.5 MB
Events in quadrant A3,426,035628,000
Events in quadrant B2,364,744655,133
Events in quadrant C4,447,863581,483
Events in quadrant D3,431,995559,364

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134633
B0103732
C0166512
D0136982

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5040891.765873%
B5040140.277778%
C50404749.404762%
D50402214.384921%

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 7043 5041 72 72 1.02% 1.43%
B 7043 5041 5 5 0.07% 0.10%
C 7043 5041 410 410 5.82% 8.13%
D 7043 5041 193 193 2.74% 3.83%

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 15 222 706547 6073.71 576 564 116.2
A 10 83 425718 3657.68 576 564 116.2
A 2 79 21409 179.33 576 564 116.2
B 5 255 44961 405.1 580 565 109.6
B 0 230 21768 193.47 580 565 109.6
B 12 111 13167 114.99 580 565 109.6
C 9 187 1838921 14304.37 559 566 128.5
C 15 214 208471 1617.72 559 566 128.5
C 15 208 147977 1147.02 559 566 128.5
D 13 249 296138 2194.5 559 544 134.7
D 12 0 225448 1669.7 559 544 134.7
D 12 227 184316 1364.33 559 544 134.7

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