ASTROSAT CZTI

Data Quality Report

Orbit 06839

Creation date: 2024-06-27T15:12:14.106286
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/AS1A02_174T04_9000000938_06839cztM0_level2.evt modeM0/AS1A02_174T04_9000000938_06839cztM0_level2_quad_clean.evt
Size (bytes)190,304,64052,859,520
Size181.5 MB 50.4 MB
Events in quadrant A1,284,232345,847
Events in quadrant B1,327,215354,286
Events in quadrant C1,399,471349,243
Events in quadrant D1,541,695332,906

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12513186377920
B1-1-1
C1-1-1
D1-1-1

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A062952
B063331
C063711
D065841

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3070130.423453%
B3070341.107492%
C3070210.684039%
D3070140.456026%

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 3070 3070 0 0 0.00% 0.00%
B 3070 3070 1 1 0.03% 0.03%
C 3070 3070 0 0 0.00% 0.00%
D 3070 3070 2 2 0.07% 0.07%

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 0 226 3080 39.25 332 326 70.2
A 12 194 3060 38.96 332 326 70.2
A 13 248 2931 37.12 332 326 70.2
B 0 219 9364 134.08 338 329 67.4
B 12 111 7107 100.58 338 329 67.4
B 4 81 6327 89.01 338 329 67.4
C 9 247 86145 1119.86 323 325 76.6
C 9 68 22990 295.75 323 325 76.6
C 10 22 9348 117.74 323 325 76.6
D 8 195 275385 3408.82 320 309 80.7
D 2 216 24183 295.85 320 309 80.7
D 2 136 14283 173.17 320 309 80.7

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