ASTROSAT CZTI

Data Quality Report

Orbit 33764

Creation date: 2024-06-27T20:52:24.309902
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/AS1A11_086T01_9000004820_33764cztM0_level2.evt modeM0/AS1A11_086T01_9000004820_33764cztM0_level2_quad_clean.evt
Size (bytes)1,127,090,880131,742,720
Size1.0 GB 125.6 MB
Events in quadrant A10,843,381795,312
Events in quadrant B6,476,632825,713
Events in quadrant C6,509,145832,461
Events in quadrant D9,574,617784,817

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0394783
B0261692
C0261122
D0359482

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10848123211.356932%
B108483803.502950%
C108482872.645649%
D108485865.401917%

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 13621 10848 988 988 7.25% 9.11%
B 13621 10847 286 286 2.10% 2.64%
C 13621 10848 271 271 1.99% 2.50%
D 13621 10848 480 480 3.52% 4.42%

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 15 169 4377951 17956.95 1215 1192 243.7
A 15 237 1728876 7088.34 1215 1192 243.7
A 13 6 20574 79.52 1215 1192 243.7
B 5 172 672362 2801.31 1246 1212 239.6
B 5 255 644570 2685.31 1246 1212 239.6
B 0 190 69533 285.16 1246 1212 239.6
C 9 187 659653 2335.22 1225 1236 282.0
C 15 214 467906 1655.15 1225 1236 282.0
C 0 10 175163 616.87 1225 1236 282.0
D 8 195 2375826 7889.98 1219 1183 301.0
D 2 250 813897 2700.32 1219 1183 301.0
D 12 235 463787 1537.05 1219 1183 301.0

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