ASTROSAT CZTI

Data Quality Report

Orbit 39445

Creation date: 2024-06-27T22:04:38.126579
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/AS1A12_077T06_9000005474_39445cztM0_level2.fits modeM0/AS1A12_077T06_9000005474_39445cztM0_level2_quad_clean.evt
Size (bytes)328,504,32085,495,680
Size313.3 MB 81.5 MB
Events in quadrant A3,399,321572,408
Events in quadrant B2,548,623590,023
Events in quadrant C2,775,849563,515
Events in quadrant D3,051,652516,580

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133862
B0109112
C0114842
D0125162

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4941480.971463%
B4941290.586926%
C4941370.748836%
D4941721.457195%

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 8437 4943 33 33 0.39% 0.67%
B 8437 4943 12 12 0.14% 0.24%
C 8437 4943 28 28 0.33% 0.57%
D 8437 4943 78 78 0.92% 1.58%

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 15 222 802358 7080.42 552 541 113.2
A 10 83 412103 3634.28 552 541 113.2
A 9 143 30541 264.91 552 541 113.2
B 5 255 208068 1949.63 552 537 106.4
B 8 3 100509 939.18 552 537 106.4
B 5 172 56936 529.84 552 537 106.4
C 15 214 205795 1619.32 542 545 126.8
C 9 187 194867 1533.1 542 545 126.8
C 15 208 174768 1374.53 542 545 126.8
D 1 52 333854 2551.77 537 523 130.6
D 12 0 145228 1107.77 537 523 130.6
D 2 249 141578 1079.83 537 523 130.6

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