ASTROSAT CZTI

Data Quality Report

Orbit 32379

Creation date: 2024-06-27T20:39:32.081598
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/AS1A09_131T01_9000004702_32379cztM0_level2.evt modeM0/AS1A09_131T01_9000004702_32379cztM0_level2_quad_clean.evt
Size (bytes)633,395,520122,048,640
Size604.1 MB 116.4 MB
Events in quadrant A2,937,295871,754
Events in quadrant B8,063,817768,128
Events in quadrant C3,846,513831,687
Events in quadrant D3,946,426822,795

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124582
B0280151
C0151801
D0156971

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5736581.011158%
B5736182931.886332%
C57364267.426778%
D57361753.050907%

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 6971 5737 0 0 0.00% 0.00%
B 6971 5737 1342 1342 19.25% 23.39%
C 6971 5737 188 188 2.70% 3.28%
D 6971 5737 99 99 1.42% 1.73%

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 6 25916 170.17 749 734 148.0
A 13 6 13327 85.1 749 734 148.0
A 13 254 10658 67.06 749 734 148.0
B 4 80 3286093 26475.33 674 660 124.1
B 6 159 1558019 12549.82 674 660 124.1
B 5 172 429649 3456.96 674 660 124.1
C 3 233 784478 4780.47 715 720 164.0
C 14 238 126244 765.62 715 720 164.0
C 14 67 54117 325.69 715 720 164.0
D 13 249 349432 2032.64 732 713 171.6
D 8 195 349074 2030.55 732 713 171.6
D 12 1 154977 899.19 732 713 171.6

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