ASTROSAT CZTI

Data Quality Report

Orbit 18894

Creation date: 2024-06-27T17:56:13.644148
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/AS1A06_003T07_9000002818_18894cztM0_level2.evt modeM0/AS1A06_003T07_9000002818_18894cztM0_level2_quad_clean.evt
Size (bytes)664,853,760107,853,120
Size634.1 MB 102.9 MB
Events in quadrant A3,689,300719,093
Events in quadrant B7,502,849646,856
Events in quadrant C3,723,474692,961
Events in quadrant D4,693,975667,880

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160974
B0274654
C0160634
D0191654

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77411421.834388%
B7741145518.796021%
C77411892.441545%
D77423244.184965%

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 8051 7745 0 0 0.00% 0.00%
B 8051 7745 902 902 11.20% 11.65%
C 8051 7745 0 0 0.00% 0.00%
D 8052 7746 166 166 2.06% 2.14%

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 9 143 19528 96.9 949 928 191.9
A 6 16 11315 54.11 949 928 191.9
A 13 254 10262 48.63 949 928 191.9
B 3 112 3642241 21483.67 879 854 169.5
B 7 220 208026 1222.29 879 854 169.5
B 0 189 115698 677.56 879 854 169.5
C 14 238 140198 653.23 908 911 213.2
C 3 233 40358 185.0 908 911 213.2
C 13 61 6426 25.86 908 911 213.2
D 12 1 516278 2304.1 915 886 223.7
D 7 238 438869 1958.04 915 886 223.7
D 9 1 93509 414.08 915 886 223.7

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