ASTROSAT CZTI

Data Quality Report

Orbit 23922

Creation date: 2024-06-27T19:00:05.210004
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/AS1A07_142T01_9000003540_23922cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23922cztM0_level2_quad_clean.evt
Size (bytes)1,128,859,200198,008,640
Size1.1 GB 188.8 MB
Events in quadrant A7,019,4301,266,508
Events in quadrant B7,133,0021,290,236
Events in quadrant C7,283,0951,225,408
Events in quadrant D11,747,8801,189,169

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0306583
B0307283
C0310143
D0453063

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03020
B03020
C03020
D03020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A14868580.390100%
B14869700.470778%
C148691601.076064%
D148696244.196651%

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 16138 14871 1 1 0.01% 0.01%
B 16139 14872 2 2 0.01% 0.01%
C 16139 14872 0 0 0.00% 0.00%
D 16139 14872 393 393 2.44% 2.64%

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 11 29 90226 244.37 1796 1758 362.0
A 13 254 23893 61.14 1796 1758 362.0
A 0 226 15641 38.35 1796 1758 362.0
B 12 111 41116 116.23 1793 1747 338.7
B 0 189 36326 102.09 1793 1747 338.7
B 11 111 35650 100.09 1793 1747 338.7
C 14 238 273147 671.22 1729 1741 404.3
C 10 9 159341 389.77 1729 1741 404.3
C 7 247 58457 140.27 1729 1741 404.3
D 8 195 2684611 6336.66 1731 1679 423.4
D 1 52 1573664 3712.78 1731 1679 423.4
D 12 218 727844 1715.09 1731 1679 423.4

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