ASTROSAT CZTI

Data Quality Report

Orbit 04400

Creation date: 2024-06-27T14:41:27.140378
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/AS1G05_230T02_9000000548_04400cztM0_level2.evt modeM0/AS1G05_230T02_9000000548_04400cztM0_level2_quad_clean.evt
Size (bytes)723,349,440140,022,720
Size689.8 MB 133.5 MB
Events in quadrant A4,844,947884,136
Events in quadrant B5,407,593891,283
Events in quadrant C5,873,041881,268
Events in quadrant D5,068,829856,362

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215303
B0230582
C0246242
D0224052

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10509840.799315%
B105091621.541536%
C105091961.865068%
D105091030.980112%

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 13049 10510 6 6 0.05% 0.06%
B 13049 10510 76 76 0.58% 0.72%
C 13049 10510 117 117 0.90% 1.11%
D 13049 10510 31 31 0.24% 0.29%

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 0 50 39032 151.79 1237 1209 249.2
A 13 14 18371 68.87 1237 1209 249.2
A 12 194 12931 47.04 1237 1209 249.2
B 7 252 560581 2420.78 1236 1208 231.1
B 14 167 41125 172.75 1236 1208 231.1
B 15 54 19512 79.21 1236 1208 231.1
C 9 16 680064 2469.73 1206 1212 274.9
C 9 247 416745 1511.75 1206 1212 274.9
C 0 10 42763 151.17 1206 1212 274.9
D 9 35 120780 420.19 1212 1180 284.6
D 2 63 102722 356.75 1212 1180 284.6
D 13 239 53740 184.66 1212 1180 284.6

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