ASTROSAT CZTI

Data Quality Report

Orbit 24933

Creation date: 2024-06-27T19:11:37.070694
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_205T01_9000003652_24933cztM0_level2.evt modeM0/AS1T03_205T01_9000003652_24933cztM0_level2_quad_clean.evt
Size (bytes)870,773,760237,816,000
Size830.4 MB 226.8 MB
Events in quadrant A5,808,1411,610,592
Events in quadrant B6,019,0461,622,680
Events in quadrant C6,903,4491,553,197
Events in quadrant D6,782,1631,540,564

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02560
B02560
C02560
D02560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257172
B0261622
C0285212
D0283082

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12687820.646331%
B126871100.867029%
C126871741.371483%
D126872021.592181%

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 13877 12688 0 0 0.00% 0.00%
B 13877 12688 5 5 0.04% 0.04%
C 13877 12688 3 3 0.02% 0.02%
D 13877 12688 84 84 0.61% 0.66%

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 13 254 19974 61.4 1504 1468 301.4
A 3 137 14032 41.69 1504 1468 301.4
A 0 226 12769 37.5 1504 1468 301.4
B 12 111 35308 120.1 1488 1448 281.9
B 4 216 34707 117.97 1488 1448 281.9
B 15 33 33583 113.98 1488 1448 281.9
C 7 247 1062924 3194.25 1434 1443 332.3
C 14 238 227283 679.6 1434 1443 332.3
C 2 16 11849 31.31 1434 1443 332.3
D 1 52 564554 1609.72 1455 1411 349.8
D 8 195 265234 754.13 1455 1411 349.8
D 7 238 142793 404.13 1455 1411 349.8

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