ASTROSAT CZTI

Data Quality Report

Orbit 37953

Creation date: 2024-06-27T21:46:34.648833
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_082T01_9000005356_37953cztM0_level2.evt modeM0/AS1A11_082T01_9000005356_37953cztM0_level2_quad_clean.evt
Size (bytes)461,139,84058,089,600
Size439.8 MB 55.4 MB
Events in quadrant A2,842,470349,241
Events in quadrant B4,293,083342,728
Events in quadrant C3,047,211366,449
Events in quadrant D3,433,400339,226

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114483
B0161432
C0120322
D0134622

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5148190.369075%
B51484378.488733%
C51481412.738928%
D51481392.700078%

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 7061 5149 5 5 0.07% 0.10%
B 7061 5149 288 288 4.08% 5.59%
C 7061 5149 97 97 1.37% 1.88%
D 7061 5149 103 103 1.46% 2.00%

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 10 83 343825 2780.68 612 600 123.4
A 15 222 82684 665.01 612 600 123.4
A 5 98 31715 252.08 612 600 123.4
B 5 184 1235925 10989.24 595 578 112.4
B 5 172 700742 6228.43 595 578 112.4
B 4 81 13635 116.15 595 578 112.4
C 15 159 302035 2187.09 600 604 137.8
C 15 214 221230 1600.8 600 604 137.8
C 0 10 153453 1109.03 600 604 137.8
D 1 52 686899 4781.96 596 581 143.5
D 13 249 140684 976.18 596 581 143.5
D 7 223 137237 952.16 596 581 143.5

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