ASTROSAT CZTI

Data Quality Report

Orbit 04886

Creation date: 2024-06-27T14:48:26.187779
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/AS1G05_237T01_9000000620_04886cztM0_level2.evt modeM0/AS1G05_237T01_9000000620_04886cztM0_level2_quad_clean.evt
Size (bytes)622,077,12098,179,200
Size593.3 MB 93.6 MB
Events in quadrant A4,497,421592,933
Events in quadrant B4,651,160587,433
Events in quadrant C4,197,966592,868
Events in quadrant D4,863,840556,701

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0172
D0161

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022236
B022236
C022132
D022232

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230643468
B0235823727
C0224013382
D0252514400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9301720.774110%
B9194860.935393%
C9312290.311426%
D92601111.198704%

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 12104 9840 13 13 0.11% 0.13%
B 12103 9750 4 4 0.03% 0.04%
C 12104 9840 0 0 0.00% 0.00%
D 12114 9759 68 68 0.56% 0.70%

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 0 31 163197 712.94 1105 1082 227.4
A 0 50 65551 283.52 1105 1082 227.4
A 13 14 12867 51.83 1105 1082 227.4
B 15 204 236936 1110.44 1102 1079 212.4
B 0 219 51116 235.58 1102 1079 212.4
B 15 54 40826 187.13 1102 1079 212.4
C 12 4 19534 74.14 1067 1077 249.0
C 14 67 10894 39.43 1067 1077 249.0
C 13 61 8644 30.4 1067 1077 249.0
D 2 136 271746 1038.39 1058 1025 260.7
D 13 235 170131 648.63 1058 1025 260.7
D 2 14 116034 441.13 1058 1025 260.7

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