ASTROSAT CZTI

Data Quality Report

Orbit 15056

Creation date: 2024-06-27T17:03:08.719245
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/AS1T02_060T01_9000002216_15056cztM0_level2.evt modeM0/AS1T02_060T01_9000002216_15056cztM0_level2_quad_clean.evt
Size (bytes)573,373,44084,536,640
Size546.8 MB 80.6 MB
Events in quadrant A3,751,352516,616
Events in quadrant B4,221,611527,674
Events in quadrant C4,935,051507,101
Events in quadrant D3,950,913489,202

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157593
B0172162
C0193752
D0167102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74642152.880493%
B74642823.778135%
C74642273.041265%
D74641632.183816%

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 9155 7466 0 0 0.00% 0.00%
B 9155 7466 19 19 0.21% 0.25%
C 9155 7466 19 19 0.21% 0.25%
D 9155 7465 17 17 0.19% 0.23%

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 1 162 38687 195.07 953 932 193.5
A 1 178 15131 73.36 953 932 193.5
A 1 161 13191 63.34 953 932 193.5
B 10 245 377313 2023.42 950 926 186.0
B 10 16 87713 466.56 950 926 186.0
B 12 111 23110 119.26 950 926 186.0
C 3 233 1350759 6234.51 919 925 216.5
C 13 61 6463 25.58 919 925 216.5
C 3 232 2871 8.99 919 925 216.5
D 7 223 261711 1159.72 921 895 224.9
D 13 249 133277 588.64 921 895 224.9
D 2 136 53031 231.82 921 895 224.9

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