ASTROSAT CZTI

Data Quality Report

Orbit 40782

Creation date: 2024-06-27T22:20:25.856868
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_095T02_9000005568_40782cztM0_level2.fits modeM0/AS1A12_095T02_9000005568_40782cztM0_level2_quad_clean.evt
Size (bytes)331,289,28086,163,840
Size315.9 MB 82.2 MB
Events in quadrant A2,860,505580,875
Events in quadrant B2,686,481598,580
Events in quadrant C3,194,376567,086
Events in quadrant D3,111,353493,842

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114823
B0115622
C0127382
D0130522

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5293140.264500%
B5293971.832609%
C52431202.288766%
D52353236.170010%

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 7176 5294 8 8 0.11% 0.15%
B 7176 5294 68 68 0.95% 1.28%
C 7176 5245 119 119 1.66% 2.27%
D 7176 5237 234 234 3.26% 4.47%

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 512346 4218.85 584 572 121.3
A 13 248 47802 389.34 584 572 121.3
A 12 189 16565 131.84 584 572 121.3
B 0 229 202662 1804.37 579 563 112.0
B 5 255 89731 796.1 579 563 112.0
B 4 171 55712 492.38 579 563 112.0
C 9 187 541527 4129.48 561 564 131.0
C 15 214 225977 1720.7 561 564 131.0
C 0 10 178531 1358.52 561 564 131.0
D 13 249 382543 2846.87 544 528 134.2
D 2 249 309947 2305.87 544 528 134.2
D 1 47 136133 1010.56 544 528 134.2

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