ASTROSAT CZTI

Data Quality Report

Orbit 28587

Creation date: 2024-06-27T19:53:41.331684
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/AS1A10_102T03_9000004106_28587cztM0_level2.evt modeM0/AS1A10_102T03_9000004106_28587cztM0_level2_quad_clean.evt
Size (bytes)627,402,24064,123,200
Size598.3 MB 61.2 MB
Events in quadrant A3,853,099388,134
Events in quadrant B3,636,434394,307
Events in quadrant C3,596,840382,154
Events in quadrant D7,489,904338,200

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155341
B0148271
C0146212
D0267421

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62771862.963199%
B6278961.529149%
C62771282.039191%
D6277118918.942170%

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 7542 6277 69 69 0.91% 1.10%
B 7543 6278 4 4 0.05% 0.06%
C 7542 6277 1 1 0.01% 0.02%
D 7542 6277 1055 1055 13.99% 16.81%

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 15 174 266144 1482.85 899 883 178.9
A 12 16 99542 551.52 899 883 178.9
A 12 194 21622 115.93 899 883 178.9
B 15 33 44300 263.82 884 864 164.6
B 10 245 42506 252.93 884 864 164.6
B 0 230 27403 161.19 884 864 164.6
C 14 238 141660 705.91 868 875 199.4
C 7 247 45716 224.84 868 875 199.4
C 0 10 18143 86.58 868 875 199.4
D 7 80 2428086 12619.29 813 795 192.3
D 1 52 1391821 7231.83 813 795 192.3
D 8 195 458356 2378.82 813 795 192.3

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