ASTROSAT CZTI

Data Quality Report

Orbit 24486

Creation date: 2024-06-27T19:06:28.117643
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/AS1T03_183T01_9000003606_24486cztM0_level2.evt modeM0/AS1T03_183T01_9000003606_24486cztM0_level2_quad_clean.evt
Size (bytes)906,793,920205,418,880
Size864.8 MB 195.9 MB
Events in quadrant A6,299,4911,352,668
Events in quadrant B7,075,6711,370,053
Events in quadrant C6,304,8471,316,856
Events in quadrant D6,900,4481,282,045

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0269543
B0294603
C0269663
D0293933

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02680
B02680
C02680
D02680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A130192001.536216%
B130193822.934173%
C130192972.281281%
D130203422.626728%

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 14414 13022 1 1 0.01% 0.01%
B 14414 13022 85 85 0.59% 0.65%
C 14414 13022 4 4 0.03% 0.03%
D 14415 13023 119 119 0.83% 0.91%

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 14 111 323852 1039.92 1545 1510 310.0
A 13 254 19603 58.37 1545 1510 310.0
A 3 137 14313 41.3 1545 1510 310.0
B 3 64 992145 3388.47 1536 1495 292.4
B 12 111 36382 119.33 1536 1495 292.4
B 11 111 32778 107.0 1536 1495 292.4
C 14 238 236330 674.47 1492 1499 348.2
C 2 16 114042 323.24 1492 1499 348.2
C 7 247 73990 208.2 1492 1499 348.2
D 13 174 520658 1427.58 1505 1457 363.7
D 1 52 353922 969.13 1505 1457 363.7
D 8 195 126053 342.59 1505 1457 363.7

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