ASTROSAT CZTI

Data Quality Report

Orbit 33874

Creation date: 2024-06-27T20:53:42.273814
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/AS1A11_068T01_9000004836_33874cztM0_level2.evt modeM0/AS1A11_068T01_9000004836_33874cztM0_level2_quad_clean.evt
Size (bytes)465,088,32061,623,360
Size443.5 MB 58.8 MB
Events in quadrant A2,517,720390,861
Events in quadrant B3,168,611384,731
Events in quadrant C3,912,436384,767
Events in quadrant D4,149,173356,431

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105363
B0124932
C0152162
D0157302

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A497380.160869%
B49731873.760306%
C49732074.162477%
D49733126.273879%

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 7064 4974 0 0 0.00% 0.00%
B 7064 4974 129 129 1.83% 2.59%
C 7064 4974 149 149 2.11% 3.00%
D 7064 4974 327 327 4.63% 6.57%

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 102825 825.25 619 607 123.9
A 10 83 11852 90.79 619 607 123.9
A 13 254 8679 65.17 619 607 123.9
B 5 172 662934 5706.39 608 593 116.1
B 0 199 30526 257.89 608 593 116.1
B 4 232 19497 162.87 608 593 116.1
C 3 233 731954 5349.73 594 599 136.7
C 0 10 424473 3100.56 594 599 136.7
C 15 214 213663 1558.53 594 599 136.7
D 12 235 1056030 7154.17 594 579 147.5
D 8 195 299983 2029.45 594 579 147.5
D 1 47 145747 983.99 594 579 147.5

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