ASTROSAT CZTI

Data Quality Report

Orbit 20465

Creation date: 2024-06-27T18:15:42.378163
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/AS1A05_198T01_9000003024_20465cztM0_level2.evt modeM0/AS1A05_198T01_9000003024_20465cztM0_level2_quad_clean.evt
Size (bytes)477,167,04091,627,200
Size455.1 MB 87.4 MB
Events in quadrant A3,237,214598,319
Events in quadrant B3,583,654604,554
Events in quadrant C3,371,112577,150
Events in quadrant D3,840,422564,114

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136232
B0146414
C0139512
D0155912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6168460.745785%
B6167931.508027%
C61671121.816118%
D61671201.945841%

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 7438 6168 0 0 0.00% 0.00%
B 7437 6167 13 13 0.17% 0.21%
C 7437 6167 5 5 0.07% 0.08%
D 7437 6167 36 36 0.48% 0.58%

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 8410 45.53 839 824 166.6
A 0 226 7254 38.59 839 824 166.6
A 3 137 6414 33.55 839 824 166.6
B 0 198 111476 699.91 837 819 158.1
B 0 189 72628 454.2 837 819 158.1
B 4 216 31964 196.99 837 819 158.1
C 14 238 131890 701.55 811 820 186.8
C 9 221 29338 152.64 811 820 186.8
C 3 233 26380 136.81 811 820 186.8
D 15 0 449863 2277.89 816 795 197.1
D 1 52 106396 535.66 816 795 197.1
D 9 1 74478 373.76 816 795 197.1

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