ASTROSAT CZTI

Data Quality Report

Orbit 16552

Creation date: 2024-06-27T17:24:17.982876
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/AS1T03_018T01_9000002442_16552cztM0_level2.evt modeM0/AS1T03_018T01_9000002442_16552cztM0_level2_quad_clean.evt
Size (bytes)1,001,292,480165,795,840
Size954.9 MB 158.1 MB
Events in quadrant A6,496,5251,049,216
Events in quadrant B6,996,7691,065,829
Events in quadrant C8,732,4791,033,935
Events in quadrant D7,240,717994,967

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0275893
B0286292
C0341752
D0300502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126982231.756182%
B126981711.346669%
C126985144.047882%
D126984973.914002%

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 14049 12701 82 82 0.58% 0.65%
B 14049 12700 48 48 0.34% 0.38%
C 14049 12701 135 135 0.96% 1.06%
D 14049 12701 292 292 2.08% 2.30%

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 15 174 607324 1968.42 1517 1485 307.8
A 15 223 34529 107.36 1517 1485 307.8
A 13 248 13513 39.08 1517 1485 307.8
B 7 220 295318 1006.0 1524 1484 292.1
B 15 35 213843 727.05 1524 1484 292.1
B 3 209 130356 441.22 1524 1484 292.1
C 3 233 2809027 8258.43 1452 1461 340.0
C 14 238 221128 646.15 1452 1461 340.0
C 7 247 43221 122.84 1452 1461 340.0
D 5 222 737153 2078.08 1457 1417 354.0
D 1 52 607893 1712.99 1457 1417 354.0
D 10 70 197765 554.58 1457 1417 354.0

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