ASTROSAT CZTI

Data Quality Report

Orbit 37142

Creation date: 2024-06-27T21:36:06.592047
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/AS1A11_079T01_9000005284_37142cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37142cztM0_level2_quad_clean.evt
Size (bytes)750,113,280116,478,720
Size715.4 MB 111.1 MB
Events in quadrant A5,030,345728,411
Events in quadrant B6,020,883728,572
Events in quadrant C5,589,551715,790
Events in quadrant D5,416,961678,974

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02000
B02000
C02000
D02000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207214
B0241023
C0222253
D0225013

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9742130.133443%
B97423523.613221%
C9742960.985424%
D97421461.498666%

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 13356 9744 1 1 0.01% 0.01%
B 13356 9744 199 199 1.49% 2.04%
C 13356 9744 76 76 0.57% 0.78%
D 13356 9744 124 124 0.93% 1.27%

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 10 83 424494 1802.6 1176 1155 234.8
A 9 143 31009 127.12 1176 1155 234.8
A 13 6 16213 64.12 1176 1155 234.8
B 5 172 1275556 5836.86 1151 1123 218.3
B 4 232 133097 604.44 1151 1123 218.3
B 5 200 54082 242.55 1151 1123 218.3
C 15 214 448282 1712.52 1129 1140 261.1
C 0 10 415614 1587.41 1129 1140 261.1
C 14 254 259405 989.14 1129 1140 261.1
D 2 249 519209 1886.07 1130 1101 274.7
D 12 217 122083 440.41 1130 1101 274.7
D 10 253 83932 301.53 1130 1101 274.7

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