ASTROSAT CZTI

Data Quality Report

Orbit 11837

Creation date: 2024-06-27T16:18:57.453577
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/AS1A04_088T03_9000001750_11837cztM0_level2.evt modeM0/AS1A04_088T03_9000001750_11837cztM0_level2_quad_clean.evt
Size (bytes)509,935,68098,216,640
Size486.3 MB 93.7 MB
Events in quadrant A3,193,579656,075
Events in quadrant B4,781,326627,330
Events in quadrant C2,987,581645,504
Events in quadrant D4,056,051608,294

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138603
B0185632
C0133782
D0163362

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6258310.495366%
B62585739.156280%
C6258661.054650%
D62582423.867050%

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 7439 6260 4 4 0.05% 0.06%
B 7439 6260 320 320 4.30% 5.11%
C 7439 6260 11 11 0.15% 0.18%
D 7439 6260 240 240 3.23% 3.83%

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 74042 479.93 756 741 152.7
A 1 162 66943 433.45 756 741 152.7
A 13 251 40943 263.22 756 741 152.7
B 3 64 1184943 8626.02 726 708 137.3
B 4 239 428307 3114.65 726 708 137.3
B 15 204 252098 1831.14 726 708 137.3
C 7 238 111039 648.28 737 741 170.1
C 13 61 5400 27.38 737 741 170.1
C 12 4 3509 16.27 737 741 170.1
D 1 52 788493 4538.34 721 702 173.6
D 8 195 219745 1261.87 721 702 173.6
D 13 104 92784 530.47 721 702 173.6

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