ASTROSAT CZTI

Data Quality Report

Orbit 23743

Creation date: 2024-06-27T18:58:13.239127
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/AS1A08_009T01_9000003516_23743cztM0_level2.evt modeM0/AS1A08_009T01_9000003516_23743cztM0_level2_quad_clean.evt
Size (bytes)559,013,760104,981,760
Size533.1 MB 100.1 MB
Events in quadrant A3,231,349677,961
Events in quadrant B3,494,957692,957
Events in quadrant C3,500,502668,716
Events in quadrant D6,216,426639,789

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146091
B0150131
C0150511
D0236941

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7176921.282051%
B71771642.285077%
C71761161.616499%
D71761672.327202%

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 7321 7178 0 0 0.00% 0.00%
B 7322 7180 24 24 0.33% 0.33%
C 7321 7179 0 0 0.00% 0.00%
D 7321 7178 50 50 0.68% 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 13 254 12414 68.35 837 818 169.7
A 3 137 7733 40.76 837 818 169.7
A 0 226 7174 37.46 837 818 169.7
B 0 229 87300 539.14 837 813 160.4
B 6 36 56130 344.84 837 813 160.4
B 12 111 19921 119.12 837 813 160.4
C 7 247 159296 837.93 805 809 189.1
C 14 238 127379 669.18 805 809 189.1
C 10 9 67376 351.94 805 809 189.1
D 8 195 2978615 15030.21 806 779 198.1
D 1 52 108191 542.15 806 779 198.1
D 2 120 39332 194.59 806 779 198.1

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