ASTROSAT CZTI

Data Quality Report

Orbit 25074

Creation date: 2024-06-27T19:13:31.894573
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/AS1T03_206T01_9000003672_25074cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25074cztM0_level2_quad_clean.evt
Size (bytes)578,767,68077,924,160
Size552.0 MB 74.3 MB
Events in quadrant A3,586,355476,095
Events in quadrant B3,676,253483,876
Events in quadrant C3,630,482456,343
Events in quadrant D6,132,054427,272

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153262
B0154532
C0153682
D0231592

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74111692.280394%
B74112222.995547%
C74111862.509783%
D741174810.093105%

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 7806 7411 0 0 0.00% 0.00%
B 7806 7411 1 1 0.01% 0.01%
C 7806 7411 0 0 0.00% 0.00%
D 7806 7411 454 454 5.82% 6.13%

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 13 254 11151 54.8 929 908 186.9
A 3 137 8747 41.94 929 908 186.9
A 0 226 7927 37.55 929 908 186.9
B 12 111 22027 117.09 926 902 180.4
B 11 111 19834 104.94 926 902 180.4
B 10 251 19141 101.1 926 902 180.4
C 14 238 139247 659.0 887 890 209.9
C 3 233 15524 69.7 887 890 209.9
C 7 247 14860 66.54 887 890 209.9
D 9 35 2170045 10294.45 861 836 210.7
D 8 195 305354 1445.16 861 836 210.7
D 1 52 261151 1235.38 861 836 210.7

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