ASTROSAT CZTI

Data Quality Report

Orbit 18587

Creation date: 2024-06-27T17:51:57.213892
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_072T02_9000002762_18587cztM0_level2.evt modeM0/AS1A05_072T02_9000002762_18587cztM0_level2_quad_clean.evt
Size (bytes)509,172,480101,260,800
Size485.6 MB 96.6 MB
Events in quadrant A3,161,472656,603
Events in quadrant B3,239,200683,687
Events in quadrant C3,324,871661,648
Events in quadrant D5,257,712615,406

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135632
B0136842
C0138492
D0199012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6438320.497049%
B6437580.901041%
C6437891.382632%
D64375158.000621%

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 7578 6439 2 2 0.03% 0.03%
B 7577 6438 0 0 0.00% 0.00%
C 7577 6438 8 8 0.11% 0.12%
D 7577 6438 464 464 6.12% 7.21%

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 9 143 24330 145.33 810 795 161.9
A 4 2 13360 77.59 810 795 161.9
A 13 254 10590 60.48 810 795 161.9
B 12 111 18494 112.71 820 799 157.0
B 11 111 15881 96.06 820 799 157.0
B 0 198 15714 95.0 820 799 157.0
C 14 238 125412 670.69 796 805 185.8
C 4 254 88661 472.88 796 805 185.8
C 13 61 5485 25.19 796 805 185.8
D 7 238 1362762 7378.08 764 745 184.6
D 1 52 871111 4714.8 764 745 184.6
D 5 222 86766 465.98 764 745 184.6

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