ASTROSAT CZTI

Data Quality Report

Orbit 11541

Creation date: 2024-06-27T16:14:30.432123
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/AS1G08_009T01_9000001692_11541cztM0_level2.evt modeM0/AS1G08_009T01_9000001692_11541cztM0_level2_quad_clean.evt
Size (bytes)700,914,240111,726,720
Size668.4 MB 106.6 MB
Events in quadrant A7,010,638688,223
Events in quadrant B5,507,425708,743
Events in quadrant C3,721,398718,378
Events in quadrant D4,423,853689,018

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0265263
B0219672
C0170462
D0190352

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83297258.704526%
B83294114.934566%
C8329230.276144%
D8329931.116581%

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 8905 8331 374 374 4.20% 4.49%
B 8905 8332 217 217 2.44% 2.60%
C 8905 8332 0 0 0.00% 0.00%
D 8905 8332 56 56 0.63% 0.67%

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 8 5 2773792 14159.36 960 940 195.8
A 1 162 173605 881.7 960 940 195.8
A 1 178 104553 529.09 960 940 195.8
B 4 239 1359444 7230.43 979 953 187.9
B 15 204 133699 706.53 979 953 187.9
B 11 51 78372 412.05 979 953 187.9
C 13 61 6892 26.71 954 959 222.1
C 3 202 2410 6.53 954 959 222.1
C 7 247 2100 5.13 954 959 222.1
D 1 52 283672 1223.14 953 927 231.2
D 2 120 153562 660.29 953 927 231.2
D 13 104 105106 450.67 953 927 231.2

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