ASTROSAT CZTI

Data Quality Report

Orbit 36256

Creation date: 2022-06-13T14:32:11.603616
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/AS1A10_071T37_9000005180_36256cztM0_level2.evt modeM0/AS1A10_071T37_9000005180_36256cztM0_level2_quad_clean.evt
Size (bytes)445,181,76079,940,160
Size424.6 MB 76.2 MB
Events in quadrant A2,697,401523,614
Events in quadrant B4,178,685507,613
Events in quadrant C2,840,619514,483
Events in quadrant D3,394,664492,565

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116003
B0161082
C0117812
D0136862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5460180.329670%
B54603907.142857%
C5460591.080586%
D5460861.575092%

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 7132 5461 4 4 0.06% 0.07%
B 7132 5461 274 274 3.84% 5.02%
C 7132 5461 37 37 0.52% 0.68%
D 7132 5461 70 70 0.98% 1.28%

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 182703 1400.52 639 624 130.0
A 9 143 34019 256.87 639 624 130.0
A 12 189 9216 66.09 639 624 130.0
B 5 172 824321 6908.51 616 600 119.2
B 5 236 446038 3735.87 616 600 119.2
B 4 171 326890 2736.58 616 600 119.2
C 15 214 228876 1564.63 620 624 145.9
C 0 10 195071 1332.91 620 624 145.9
C 13 61 4306 25.24 620 624 145.9
D 13 171 229481 1509.48 620 604 151.6
D 12 235 192329 1264.46 620 604 151.6
D 12 6 182127 1197.18 620 604 151.6

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