ASTROSAT CZTI

Data Quality Report

Orbit 42879

Creation date: 2024-06-27T22:45:18.985458
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_143T01_9000005830_42879cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42879cztM0_level2_quad_clean.evt
Size (bytes)366,580,80084,700,800
Size349.6 MB 80.8 MB
Events in quadrant A3,227,745571,863
Events in quadrant B2,545,091597,702
Events in quadrant C3,849,508538,039
Events in quadrant D3,564,338512,282

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127672
B0110282
C0146222
D0140312

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49171823.701444%
B4918380.772672%
C49183477.055714%
D49182274.615697%

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 6919 4918 144 144 2.08% 2.93%
B 6920 4919 31 31 0.45% 0.63%
C 6920 4919 324 324 4.68% 6.59%
D 6920 4919 232 232 3.35% 4.72%

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 530228 4778.43 537 525 110.9
A 15 237 528916 4766.59 537 525 110.9
A 13 248 83859 751.75 537 525 110.9
B 3 112 173769 1676.37 545 530 103.3
B 0 190 59620 571.79 545 530 103.3
B 15 85 56514 541.74 545 530 103.3
C 0 207 788834 6626.32 517 520 119.0
C 14 254 592393 4975.1 517 520 119.0
C 12 2 230601 1933.99 517 520 119.0
D 12 6 623354 4813.53 530 514 129.4
D 12 233 205976 1587.88 530 514 129.4
D 1 52 172328 1327.84 530 514 129.4

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