ASTROSAT CZTI

Data Quality Report

Orbit 47861

Creation date: 2024-08-04T14:12:44.349017
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_038T16_9000006364_47861cztM0_level2.fits modeM0/AS1A09_038T16_9000006364_47861cztM0_level2_quad_clean.evt
Size (bytes)1,144,425,600183,545,280
Size1.1 GB 175.0 MB
Events in quadrant A12,209,4201,272,894
Events in quadrant B5,533,0801,309,011
Events in quadrant C5,377,4971,271,121
Events in quadrant D18,278,002840,135

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02540
B02540
C02540
D02540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04455710
B0257042
C0258502
D0629762

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A124893783.026663%
B124911040.832599%
C12491970.776559%
D12492389731.195965%

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 13886 12492 53 53 0.38% 0.42%
B 13886 12492 6 6 0.04% 0.05%
C 13886 12491 45 45 0.32% 0.36%
D 13887 12493 4005 4005 28.84% 32.06%

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 7071470 25789.04 1318 1287 274.2
A 7 3 30708 107.32 1318 1287 274.2
A 3 137 15667 52.45 1318 1287 274.2
B 4 21 80724 307.12 1325 1283 258.7
B 5 255 51335 193.5 1325 1283 258.7
B 0 183 42183 158.12 1325 1283 258.7
C 12 2 180173 589.81 1302 1309 303.3
C 14 254 50956 163.71 1302 1309 303.3
C 9 237 27926 87.77 1302 1309 303.3
D 2 37 8364104 29047.22 1135 1097 287.9
D 2 165 3153176 10948.11 1135 1097 287.9
D 12 2 983453 3412.02 1135 1097 287.9

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