ASTROSAT CZTI

Data Quality Report

Orbit 28463

Creation date: 2024-06-27T19:52:01.170192
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_101T21_9000004090_28463cztM0_level2.evt modeM0/AS1A10_101T21_9000004090_28463cztM0_level2_quad_clean.evt
Size (bytes)690,252,480155,718,720
Size658.3 MB 148.5 MB
Events in quadrant A4,488,4941,050,399
Events in quadrant B4,088,1661,075,291
Events in quadrant C4,006,6951,038,489
Events in quadrant D7,754,769970,980

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191470
B0176950
C0174340
D0289110

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83681722.055449%
B83691041.242681%
C83691151.374119%
D83697178.567332%

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 8943 8370 43 43 0.48% 0.51%
B 8944 8371 7 7 0.08% 0.08%
C 8944 8370 0 0 0.00% 0.00%
D 8944 8370 568 568 6.35% 6.79%

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 15 174 636519 3183.82 995 975 199.6
A 13 254 13437 62.43 995 975 199.6
A 3 137 10041 45.42 995 975 199.6
B 10 245 98575 511.29 996 969 190.9
B 10 246 27162 137.2 996 969 190.9
B 0 230 24958 125.66 996 969 190.9
C 14 238 155576 678.98 968 972 227.7
C 3 233 42634 182.97 968 972 227.7
C 15 208 31712 135.0 968 972 227.7
D 8 195 2260539 9949.35 947 920 227.1
D 1 52 1031148 4536.21 947 920 227.1
D 13 104 402423 1767.86 947 920 227.1

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