ASTROSAT CZTI

Data Quality Report

Orbit 16437

Creation date: 2024-06-27T17:22:40.755370
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_069T04_9000002428_16437cztM0_level2.evt modeM0/AS1A05_069T04_9000002428_16437cztM0_level2_quad_clean.evt
Size (bytes)505,385,28090,881,280
Size482.0 MB 86.7 MB
Events in quadrant A3,211,288583,006
Events in quadrant B3,581,747591,381
Events in quadrant C3,960,882562,549
Events in quadrant D4,091,279542,468

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140542
B0149151
C0161231
D0166941

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6782400.589797%
B6782791.164848%
C67821362.005308%
D67821562.300206%

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 7648 6784 0 0 0.00% 0.00%
B 7648 6784 15 15 0.20% 0.22%
C 7648 6784 30 30 0.39% 0.44%
D 7648 6784 121 121 1.58% 1.78%

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 15 174 57364 346.07 811 794 163.5
A 3 1 34005 203.17 811 794 163.5
A 0 226 7253 39.51 811 794 163.5
B 15 35 90234 570.94 810 789 156.7
B 0 198 78113 493.57 810 789 156.7
B 3 209 60810 383.12 810 789 156.7
C 3 233 479864 2629.83 774 778 182.2
C 4 254 319056 1747.11 774 778 182.2
C 14 238 117627 641.41 774 778 182.2
D 1 52 593028 3077.28 783 757 192.5
D 5 222 239926 1242.66 783 757 192.5
D 12 218 154529 798.96 783 757 192.5

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