ASTROSAT CZTI

Data Quality Report

Orbit 12681

Creation date: 2024-06-27T16:30:58.535389
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_174T01_9000001876_12681cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12681cztM0_level2_quad_clean.evt
Size (bytes)474,246,72092,056,320
Size452.3 MB 87.8 MB
Events in quadrant A3,074,139601,296
Events in quadrant B4,285,458588,546
Events in quadrant C3,067,779594,621
Events in quadrant D3,507,792564,117

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132112
B0168961
C0131841
D0146421

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6293380.603846%
B62933215.100906%
C6293280.444939%
D6293841.334816%

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 7423 6293 0 0 0.00% 0.00%
B 7424 6294 223 223 3.00% 3.54%
C 7423 6293 8 8 0.11% 0.13%
D 7423 6293 74 74 1.00% 1.18%

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 5 98 57648 358.33 777 762 158.8
A 12 189 9479 54.91 777 762 158.8
A 8 15 8938 51.5 777 762 158.8
B 4 239 703522 4826.76 765 749 145.6
B 3 64 387247 2654.53 765 749 145.6
B 3 209 97759 666.28 765 749 145.6
C 15 208 111346 631.51 754 760 175.1
C 14 234 14067 75.99 754 760 175.1
C 13 61 5617 27.74 754 760 175.1
D 1 52 547926 2933.35 745 730 186.5
D 13 104 52189 275.86 745 730 186.5
D 13 249 31776 166.43 745 730 186.5

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