ASTROSAT CZTI

Data Quality Report

Orbit 20537

Creation date: 2024-06-27T18:16:41.054620
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/AS1A05_176T04_9000003034_20537cztM0_level2.evt modeM0/AS1A05_176T04_9000003034_20537cztM0_level2_quad_clean.evt
Size (bytes)482,500,80098,187,840
Size460.1 MB 93.6 MB
Events in quadrant A4,002,112654,350
Events in quadrant B3,605,172658,492
Events in quadrant C3,211,861639,753
Events in quadrant D3,408,428623,928

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156652
B0145992
C0131102
D0138492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56732173.825137%
B56741402.467395%
C5674821.445189%
D56741382.432147%

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 11504 5675 163 163 1.42% 2.87%
B 11504 5676 63 63 0.55% 1.11%
C 11504 5676 15 15 0.13% 0.26%
D 11504 5676 117 117 1.02% 2.06%

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 6 16 1259297 8761.37 708 694 143.7
A 8 205 9553 61.67 708 694 143.7
A 11 29 9397 60.58 708 694 143.7
B 7 220 376526 2880.08 701 684 130.5
B 0 197 246214 1881.5 701 684 130.5
B 0 189 92579 704.19 701 684 130.5
C 8 208 183726 1162.67 680 686 157.4
C 0 207 136183 860.68 680 686 157.4
C 9 221 131095 828.36 680 686 157.4
D 12 238 323366 1936.14 690 670 166.7
D 13 153 126774 756.61 690 670 166.7
D 7 38 100760 600.53 690 670 166.7

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