ASTROSAT CZTI

Data Quality Report

Orbit 42690

Creation date: 2024-06-27T22:43:05.203098
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/AS1A05_013T01_9000005822_42690cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42690cztM0_level2_quad_clean.evt
Size (bytes)324,711,36090,227,520
Size309.7 MB 86.0 MB
Events in quadrant A3,000,996619,325
Events in quadrant B2,397,185641,305
Events in quadrant C2,621,761596,946
Events in quadrant D3,596,605512,561

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119252
B0104822
C0107912
D0142582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0360
C0360
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5172390.754060%
B517270.135344%
C5172130.251353%
D51724057.830626%

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 7115 5173 22 22 0.31% 0.43%
B 7115 5173 1 1 0.01% 0.02%
C 7115 5173 11 11 0.15% 0.21%
D 7115 5173 348 348 4.89% 6.73%

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 540287 4485.04 592 581 120.3
A 13 248 83584 689.77 592 581 120.3
A 15 237 45898 376.59 592 581 120.3
B 5 172 24140 208.63 593 578 112.9
B 0 245 21114 181.84 593 578 112.9
B 5 255 14141 120.09 593 578 112.9
C 15 214 217690 1629.08 577 581 133.3
C 14 254 86995 648.41 577 581 133.3
C 3 233 26572 195.02 577 581 133.3
D 1 52 968073 7365.37 544 529 131.4
D 2 249 417505 3174.21 544 529 131.4
D 1 47 47632 358.57 544 529 131.4

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