ASTROSAT CZTI

Data Quality Report

Orbit 40347

Creation date: 2024-06-27T22:15:10.002681
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_40347cztM0_level2.fits modeM0/AS1A12_056T02_9000005538_40347cztM0_level2_quad_clean.evt
Size (bytes)334,748,16087,595,200
Size319.2 MB 83.5 MB
Events in quadrant A3,548,690598,418
Events in quadrant B2,489,205620,651
Events in quadrant C2,752,468584,213
Events in quadrant D3,211,451498,722

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138953
B0106442
C0111692
D0129222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A49971432.861717%
B4997400.800480%
C4997561.120672%
D49974519.025415%

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 7001 4998 129 129 1.84% 2.58%
B 7001 4998 21 21 0.30% 0.42%
C 7001 4998 56 56 0.80% 1.12%
D 7001 4998 128 128 1.83% 2.56%

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 6 10 464911 4166.9 550 541 111.4
A 10 83 445792 3995.34 550 541 111.4
A 13 248 382283 3425.46 550 541 111.4
B 4 170 188791 1766.58 555 542 106.6
B 0 230 39703 367.5 555 542 106.6
B 5 255 29216 269.08 555 542 106.6
C 14 254 355220 2823.46 541 547 125.6
C 15 214 231823 1841.13 541 547 125.6
C 0 10 25956 202.27 541 547 125.6
D 12 227 506455 3940.37 513 498 128.4
D 13 249 208028 1616.23 513 498 128.4
D 12 128 157866 1225.57 513 498 128.4

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