ASTROSAT CZTI

Data Quality Report

Orbit 17348

Creation date: 2024-06-27T17:35:19.550194
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_165T12_9000002562_17348cztM0_level2.evt modeM0/AS1A05_165T12_9000002562_17348cztM0_level2_quad_clean.evt
Size (bytes)790,649,280159,626,880
Size754.0 MB 152.2 MB
Events in quadrant A5,563,6081,014,126
Events in quadrant B5,711,4291,028,567
Events in quadrant C5,741,345974,748
Events in quadrant D6,087,586959,574

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250712
B0251842
C0251092
D0266183

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02500
B02500
C02500
D02500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12412660.531743%
B12413700.563925%
C124131401.127850%
D12412860.692878%

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 13692 12414 0 0 0.00% 0.00%
B 13693 12415 2 2 0.01% 0.02%
C 13693 12414 0 0 0.00% 0.00%
D 13692 12414 26 26 0.19% 0.21%

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 0 226 12541 38.05 1448 1417 292.4
A 3 137 11145 33.27 1448 1417 292.4
A 12 194 10247 30.2 1448 1417 292.4
B 4 173 35626 125.04 1447 1409 273.6
B 12 111 33957 118.94 1447 1409 273.6
B 11 111 30434 106.07 1447 1409 273.6
C 14 238 214690 652.44 1400 1406 326.9
C 3 233 72872 218.62 1400 1406 326.9
C 13 61 9706 25.39 1400 1406 326.9
D 5 222 295162 855.88 1410 1368 343.3
D 13 189 175847 508.29 1410 1368 343.3
D 1 52 146601 423.09 1410 1368 343.3

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