ASTROSAT CZTI

Data Quality Report

Orbit 39789

Creation date: 2024-06-27T22:09:00.738395
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/AS1T05_086T01_9000005496_39789cztM0_level2.fits modeM0/AS1T05_086T01_9000005496_39789cztM0_level2_quad_clean.evt
Size (bytes)1,529,167,680330,891,840
Size1.4 GB 315.6 MB
Events in quadrant A12,462,9622,290,620
Events in quadrant B11,391,1492,371,288
Events in quadrant C19,688,7651,962,008
Events in quadrant D11,564,8132,059,557

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040410
B040410
C04048
D04039

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0582
B0584
C0582
D0584

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0509341501
B047778890
C0740352556
D0488941092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A193786553.380122%
B194214482.306781%
C19331260313.465418%
D193914582.361920%

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 25632 19442 470 470 1.83% 2.42%
B 25632 19502 241 241 0.94% 1.24%
C 25632 19380 2290 2290 8.93% 11.82%
D 25632 19472 382 382 1.49% 1.96%

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 9 143 1491058 3254.16 2206 2167 457.5
A 10 83 1355026 2956.84 2206 2167 457.5
A 2 79 543889 1184.0 2206 2167 457.5
B 5 172 780317 1813.99 2205 2152 429.0
B 5 255 769919 1789.75 2205 2152 429.0
B 4 170 268417 620.69 2205 2152 429.0
C 9 187 9807454 20102.92 2063 2090 487.8
C 15 208 943538 1930.15 2063 2090 487.8
C 15 214 755949 1545.56 2063 2090 487.8
D 6 240 979793 1822.21 2144 2089 536.5
D 12 227 966222 1796.91 2144 2089 536.5
D 13 249 704085 1308.35 2144 2089 536.5

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