ASTROSAT CZTI

Data Quality Report

Orbit 25045

Creation date: 2024-06-27T19:13:10.023427
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_25045cztM0_level2.evt modeM0/AS1T03_206T01_9000003672_25045cztM0_level2_quad_clean.evt
Size (bytes)600,606,72078,629,760
Size572.8 MB 75.0 MB
Events in quadrant A3,811,233480,700
Events in quadrant B3,776,898492,601
Events in quadrant C3,860,336467,316
Events in quadrant D6,238,202423,816

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159542
B0157522
C0158192
D0237132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74252403.232323%
B74262623.528144%
C74262573.460813%
D74265767.756531%

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 8650 7426 23 23 0.27% 0.31%
B 8651 7426 6 6 0.07% 0.08%
C 8651 7427 0 0 0.00% 0.00%
D 8651 7428 346 346 4.00% 4.66%

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 125509 660.12 936 916 188.7
A 11 208 76239 399.08 936 916 188.7
A 13 254 11523 56.2 936 916 188.7
B 4 80 72966 399.61 931 907 180.3
B 3 64 24839 132.72 931 907 180.3
B 12 111 22307 118.67 931 907 180.3
C 14 238 141157 666.55 895 901 210.4
C 7 247 139918 660.67 895 901 210.4
C 2 16 51651 241.19 895 901 210.4
D 8 195 1487825 6887.19 880 853 215.9
D 9 35 1033189 4781.46 880 853 215.9
D 7 238 125048 575.23 880 853 215.9

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