ASTROSAT CZTI

Data Quality Report

Orbit 27575

Creation date: 2024-06-27T19:41:44.287971
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/AS1A09_038T33_9000003970_27575cztM0_level2.evt modeM0/AS1A09_038T33_9000003970_27575cztM0_level2_quad_clean.evt
Size (bytes)715,584,960153,319,680
Size682.4 MB 146.2 MB
Events in quadrant A4,372,0931,027,859
Events in quadrant B4,594,9341,068,893
Events in quadrant C4,597,0911,023,380
Events in quadrant D7,521,318922,012

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182580
B0189150
C0188010
D0283090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8663260.300127%
B8663480.554081%
C8663860.992728%
D86637348.472815%

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 11348 8665 3 3 0.03% 0.03%
B 11348 8665 3 3 0.03% 0.03%
C 11348 8665 2 2 0.02% 0.02%
D 11348 8665 676 676 5.96% 7.80%

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 8 192 15723 65.0 1129 1110 224.8
A 13 254 14500 59.56 1129 1110 224.8
A 3 137 9908 39.13 1129 1110 224.8
B 3 64 34037 158.58 1138 1113 207.6
B 0 230 31147 144.66 1138 1113 207.6
B 4 52 26568 122.61 1138 1113 207.6
C 14 238 181714 704.68 1114 1121 256.3
C 10 22 22525 83.52 1114 1121 256.3
C 14 67 16184 58.78 1114 1121 256.3
D 1 52 2053044 8296.25 1063 1035 247.3
D 6 112 971790 3924.75 1063 1035 247.3
D 7 80 346057 1394.92 1063 1035 247.3

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