ASTROSAT CZTI

Data Quality Report

Orbit 28843

Creation date: 2024-06-27T19:57:04.587632
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/AS1A10_121T01_9000004134_28843cztM0_level2.evt modeM0/AS1A10_121T01_9000004134_28843cztM0_level2_quad_clean.evt
Size (bytes)894,709,440137,612,160
Size853.3 MB 131.2 MB
Events in quadrant A4,465,754920,448
Events in quadrant B4,541,766935,975
Events in quadrant C4,985,020888,877
Events in quadrant D12,498,620799,831

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0189252
B0190592
C0204532
D0434782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A89591211.350597%
B89591531.707780%
C89593453.850876%
D8960214723.962054%

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 10214 8959 7 7 0.07% 0.08%
B 10214 8959 25 25 0.24% 0.28%
C 10214 8959 0 0 0.00% 0.00%
D 10215 8960 1938 1938 18.97% 21.63%

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 14 235 225185 1021.78 1091 1066 219.3
A 15 174 22368 97.12 1091 1066 219.3
A 13 254 16668 71.13 1091 1066 219.3
B 5 172 116784 562.06 1082 1054 205.9
B 5 255 58819 280.55 1082 1054 205.9
B 0 229 41880 198.28 1082 1054 205.9
C 3 233 525106 2162.08 1038 1045 242.4
C 14 238 234109 961.54 1038 1045 242.4
C 14 254 102664 419.24 1038 1045 242.4
D 8 195 5667441 23951.92 987 959 236.6
D 13 104 1702596 7192.73 987 959 236.6
D 1 52 995222 4202.7 987 959 236.6

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