ASTROSAT CZTI

Data Quality Report

Orbit 26401

Creation date: 2024-06-27T19:28:33.745922
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/AS1A09_127T01_9000003816_26401cztM0_level2.evt modeM0/AS1A09_127T01_9000003816_26401cztM0_level2_quad_clean.evt
Size (bytes)480,072,960102,346,560
Size457.8 MB 97.6 MB
Events in quadrant A3,120,236677,351
Events in quadrant B3,374,803703,647
Events in quadrant C4,098,699648,476
Events in quadrant D3,532,575645,332

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130840
B0138650
C0161390
D0145200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6088150.246386%
B6089430.706191%
C60882884.730618%
D6088400.657030%

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 7453 6089 2 2 0.03% 0.03%
B 7454 6090 11 11 0.15% 0.18%
C 7453 6089 145 145 1.95% 2.38%
D 7453 6089 25 25 0.34% 0.41%

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 0 13 50435 317.86 795 782 156.2
A 13 254 11356 67.69 795 782 156.2
A 0 226 6770 38.33 795 782 156.2
B 0 189 88941 594.87 805 785 148.2
B 0 244 66102 440.76 805 785 148.2
B 5 172 43654 289.28 805 785 148.2
C 2 16 548975 3101.41 769 778 176.8
C 3 233 387293 2186.7 769 778 176.8
C 14 238 123207 692.64 769 778 176.8
D 1 52 395594 2145.2 778 761 184.1
D 12 233 84047 452.51 778 761 184.1
D 7 223 61486 329.93 778 761 184.1

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