ASTROSAT CZTI

Data Quality Report

Orbit 33670

Creation date: 2024-06-27T20:51:19.487405
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/AS1T04_076T01_9000004810_33670cztM0_level2.evt modeM0/AS1T04_076T01_9000004810_33670cztM0_level2_quad_clean.evt
Size (bytes)670,011,84074,016,000
Size639.0 MB 70.6 MB
Events in quadrant A10,290,627246,961
Events in quadrant B2,973,993559,468
Events in quadrant C3,257,358559,160
Events in quadrant D3,436,863530,244

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0339183
B0119742
C0129412
D0135372

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4909455292.727643%
B4909701.425952%
C49091593.238949%
D4909190.387044%

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 7031 4908 3389 3389 48.20% 69.05%
B 7032 4910 50 50 0.71% 1.02%
C 7032 4910 133 133 1.89% 2.71%
D 7032 4910 13 13 0.18% 0.26%

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 9118437 170637.82 261 257 53.4
A 15 237 118692 2216.4 261 257 53.4
A 9 143 35452 658.64 261 257 53.4
B 5 172 189176 1544.69 646 633 122.1
B 15 222 81298 660.87 646 633 122.1
B 4 81 39257 316.44 646 633 122.1
C 0 10 361002 2515.92 627 637 143.2
C 15 214 227878 1586.51 627 637 143.2
C 3 233 204327 1422.08 627 637 143.2
D 8 195 607476 3747.25 626 615 161.9
D 1 52 115115 707.02 626 615 161.9
D 2 250 72256 442.37 626 615 161.9

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