ASTROSAT CZTI

Data Quality Report

Orbit 21368

Creation date: 2024-06-27T18:26:58.234213
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/AS1A06_009T05_9000003154_21368cztM0_level2.evt modeM0/AS1A06_009T05_9000003154_21368cztM0_level2_quad_clean.evt
Size (bytes)526,927,680105,410,880
Size502.5 MB 100.5 MB
Events in quadrant A3,617,647687,357
Events in quadrant B3,729,072689,537
Events in quadrant C3,970,818665,704
Events in quadrant D4,155,135651,778

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152842
B0157562
C0166702
D0171572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7159680.949853%
B71591211.690180%
C71591391.941612%
D7159771.075569%

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 7654 7160 18 18 0.24% 0.25%
B 7654 7160 22 22 0.29% 0.31%
C 7654 7160 5 5 0.07% 0.07%
D 7654 7160 28 28 0.37% 0.39%

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 5 168 167943 951.11 873 855 175.7
A 15 174 73885 415.71 873 855 175.7
A 13 254 12034 63.63 873 855 175.7
B 0 189 59733 359.05 867 847 164.0
B 0 230 44874 268.45 867 847 164.0
B 0 190 39925 238.27 867 847 164.0
C 3 233 621368 3209.75 825 828 193.3
C 14 238 129143 663.71 825 828 193.3
C 13 61 5842 25.93 825 828 193.3
D 12 235 351395 1703.4 839 814 205.8
D 1 52 272165 1318.44 839 814 205.8
D 7 38 144330 697.32 839 814 205.8

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