ASTROSAT CZTI

Data Quality Report

Orbit 20186

Creation date: 2024-06-27T18:12:11.410921
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/AS1C04_001T01_9000002994_20186cztM0_level2.evt modeM0/AS1C04_001T01_9000002994_20186cztM0_level2_quad_clean.evt
Size (bytes)474,937,920128,687,040
Size452.9 MB 122.7 MB
Events in quadrant A3,136,003869,703
Events in quadrant B3,568,834865,174
Events in quadrant C3,681,702847,020
Events in quadrant D3,527,371834,187

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140592
B0153402
C0155462
D0155232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6915150.216920%
B6915731.055676%
C6915791.142444%
D69141011.460804%

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 7775 6916 1 1 0.01% 0.01%
B 7775 6916 30 30 0.39% 0.43%
C 7775 6916 0 0 0.00% 0.00%
D 7774 6915 69 69 0.89% 1.00%

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 0 253 22991 136.78 803 786 162.3
A 14 238 12192 70.26 803 786 162.3
A 13 254 9097 51.2 803 786 162.3
B 7 220 136604 886.25 801 779 153.3
B 0 197 122777 796.03 801 779 153.3
B 4 171 49393 317.2 801 779 153.3
C 3 233 502112 2770.83 778 782 180.9
C 14 238 120967 664.26 778 782 180.9
C 8 128 13283 69.09 778 782 180.9
D 9 1 274249 1421.6 787 764 192.4
D 15 0 94183 485.6 787 764 192.4
D 7 238 68561 352.41 787 764 192.4

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