ASTROSAT CZTI

Data Quality Report

Orbit 12355

Creation date: 2024-06-27T16:25:58.967143
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/AS1A04_210T03_9000001830_12355cztM0_level2.evt modeM0/AS1A04_210T03_9000001830_12355cztM0_level2_quad_clean.evt
Size (bytes)745,862,400108,129,600
Size711.3 MB 103.1 MB
Events in quadrant A6,487,772651,064
Events in quadrant B5,427,659665,823
Events in quadrant C4,433,751663,770
Events in quadrant D5,589,635627,816

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260113
B0224242
C0198512
D0233712

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A96021851.926682%
B96022222.312018%
C9602550.572797%
D96023353.488856%

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 11203 9605 7 7 0.06% 0.07%
B 11203 9605 87 87 0.78% 0.91%
C 11203 9605 26 26 0.23% 0.27%
D 11203 9605 366 366 3.27% 3.81%

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 13 251 712486 3053.28 1123 1098 233.0
A 8 15 656461 2812.82 1123 1098 233.0
A 1 162 331683 1418.87 1123 1098 233.0
B 4 239 473590 2169.01 1130 1098 217.8
B 0 85 351247 1607.39 1130 1098 217.8
B 0 230 46305 207.53 1130 1098 217.8
C 15 208 130945 506.84 1101 1107 256.2
C 14 234 8775 29.93 1101 1107 256.2
C 13 61 8030 27.03 1101 1107 256.2
D 1 52 1065942 4044.49 1091 1061 263.3
D 13 104 195394 738.09 1091 1061 263.3
D 10 157 74831 280.18 1091 1061 263.3

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