ASTROSAT CZTI

Data Quality Report

Orbit 08853

Creation date: 2024-06-27T15:38:05.341868
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/AS1A03_036T01_9000001230_08853cztM0_level2.evt modeM0/AS1A03_036T01_9000001230_08853cztM0_level2_quad_clean.evt
Size (bytes)452,525,76084,922,560
Size431.6 MB 81.0 MB
Events in quadrant A3,575,025528,129
Events in quadrant B3,331,495539,265
Events in quadrant C2,991,286528,420
Events in quadrant D3,353,089510,418

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149249
B0141608
C0135721
D0139813

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66791382.066178%
B66791181.766732%
C6682540.808141%
D6681660.987876%

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 7627 6682 52 52 0.68% 0.78%
B 7627 6681 25 25 0.33% 0.37%
C 7627 6682 1 1 0.01% 0.01%
D 7627 6682 5 5 0.07% 0.07%

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 8 5 315292 1948.82 788 769 161.4
A 15 174 175373 1081.87 788 769 161.4
A 14 31 39111 237.57 788 769 161.4
B 10 16 90048 591.68 791 773 150.9
B 4 48 70454 461.82 791 773 150.9
B 0 214 29916 193.15 791 773 150.9
C 1 3 15777 84.7 762 763 177.3
C 13 61 5633 27.47 762 763 177.3
C 12 4 2266 8.48 762 763 177.3
D 8 195 246057 1207.15 760 743 203.2
D 13 105 56758 275.64 760 743 203.2
D 2 152 38939 187.96 760 743 203.2

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