ASTROSAT CZTI

Data Quality Report

Orbit 26643

Creation date: 2024-06-27T19:31:18.258841
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_145T01_9000003848_26643cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26643cztM0_level2_quad_clean.evt
Size (bytes)424,160,64086,768,640
Size404.5 MB 82.7 MB
Events in quadrant A2,896,675560,901
Events in quadrant B3,143,332570,542
Events in quadrant C2,947,360545,341
Events in quadrant D3,448,765530,178

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123740
B0131310
C0125460
D0143340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6025380.630705%
B6026480.796548%
C6026731.211417%
D60261222.024560%

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 6965 6026 0 0 0.00% 0.00%
B 6966 6027 0 0 0.00% 0.00%
C 6966 6027 4 4 0.06% 0.07%
D 6966 6027 78 78 1.12% 1.29%

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 19734 126.13 745 732 150.7
A 13 254 9911 60.93 745 732 150.7
A 3 137 6786 40.18 745 732 150.7
B 3 112 177533 1236.57 741 725 143.0
B 0 219 28256 192.55 741 725 143.0
B 0 190 20564 138.75 741 725 143.0
C 14 238 114102 680.17 710 717 166.7
C 15 208 34020 199.78 710 717 166.7
C 3 233 32486 190.58 710 717 166.7
D 1 52 612534 3184.83 708 694 192.1
D 2 250 58866 302.8 708 694 192.1
D 7 80 30725 156.32 708 694 192.1

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