ASTROSAT CZTI

Data Quality Report

Orbit 14101

Creation date: 2024-06-27T16:50:22.871296
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/AS1G08_022T01_9000002078_14101cztM0_level2.evt modeM0/AS1G08_022T01_9000002078_14101cztM0_level2_quad_clean.evt
Size (bytes)577,710,720103,956,480
Size550.9 MB 99.1 MB
Events in quadrant A3,594,354692,223
Events in quadrant B5,079,198662,471
Events in quadrant C3,543,156658,987
Events in quadrant D4,790,067632,229

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153763
B0199232
C0151232
D0193722

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7217841.163919%
B72175928.202854%
C7217330.457254%
D72172623.630317%

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 8803 7220 2 2 0.02% 0.03%
B 8803 7220 244 244 2.77% 3.38%
C 8803 7220 10 10 0.11% 0.14%
D 8803 7220 118 118 1.34% 1.63%

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 8 15 62696 346.13 886 866 178.6
A 12 189 55820 307.63 886 866 178.6
A 15 222 49055 269.76 886 866 178.6
B 10 16 1470038 9024.2 857 834 162.8
B 0 189 154878 946.17 857 834 162.8
B 3 209 25908 154.01 857 834 162.8
C 3 233 177131 896.83 852 855 196.6
C 0 207 42998 214.41 852 855 196.6
C 13 61 6102 26.69 852 855 196.6
D 1 52 1197702 6006.09 835 815 199.3
D 15 0 227573 1137.89 835 815 199.3
D 10 157 55435 274.09 835 815 199.3

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