ASTROSAT CZTI

Data Quality Report

Orbit 24909

Creation date: 2024-06-27T19:11:19.509871
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/AS1A08_003T16_9000003650_24909cztM0_level2.evt modeM0/AS1A08_003T16_9000003650_24909cztM0_level2_quad_clean.evt
Size (bytes)375,140,16059,103,360
Size357.8 MB 56.4 MB
Events in quadrant A2,361,737375,294
Events in quadrant B2,377,707389,000
Events in quadrant C3,519,007354,747
Events in quadrant D2,787,965345,208

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A098091
B098461
C0136451
D0114771

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4630190.410367%
B4630210.453564%
C46301633.520518%
D4630210.453564%

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 5920 4631 0 0 0.00% 0.00%
B 5920 4631 2 2 0.03% 0.04%
C 5920 4631 80 80 1.35% 1.73%
D 5920 4631 4 4 0.07% 0.09%

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 15 223 37402 307.72 601 591 119.6
A 15 239 7693 59.37 601 591 119.6
A 13 254 7069 54.15 601 591 119.6
B 4 80 15248 127.46 602 588 115.0
B 12 111 13898 115.72 602 588 115.0
B 11 111 12388 102.6 602 588 115.0
C 7 247 1185774 8908.79 569 574 133.0
C 14 238 92683 692.36 569 574 133.0
C 2 16 13669 98.43 569 574 133.0
D 1 52 484159 3478.38 573 557 139.0
D 2 244 70522 503.23 573 557 139.0
D 8 195 48488 344.75 573 557 139.0

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