ASTROSAT CZTI

Data Quality Report

Orbit 12760

Creation date: 2024-06-27T16:32:01.638003
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/AS1A04_044T01_9000001882_12760cztM0_level2.evt modeM0/AS1A04_044T01_9000001882_12760cztM0_level2_quad_clean.evt
Size (bytes)894,360,960140,598,720
Size852.9 MB 134.1 MB
Events in quadrant A6,650,349864,042
Events in quadrant B7,252,875841,506
Events in quadrant C5,386,191896,934
Events in quadrant D7,006,355847,181

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0275112
B0291852
C0241672
D0288702

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02360
B02360
C02360
D02360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A116841571.343718%
B116847426.350565%
C11684800.684697%
D116842592.216707%

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 12555 11687 27 27 0.22% 0.23%
B 12555 11687 501 501 3.99% 4.29%
C 12555 11687 23 23 0.18% 0.20%
D 12555 11687 180 180 1.43% 1.54%

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 23 618271 2204.58 1366 1330 279.8
A 15 239 224205 796.42 1366 1330 279.8
A 8 15 150882 534.41 1366 1330 279.8
B 4 239 1365670 5313.32 1338 1303 256.8
B 0 85 492224 1911.82 1338 1303 256.8
B 3 209 48105 182.26 1338 1303 256.8
C 15 208 157791 503.46 1336 1343 310.7
C 8 128 11903 33.98 1336 1343 310.7
C 13 61 9760 27.09 1336 1343 310.7
D 1 52 1230522 3858.26 1323 1283 318.6
D 8 195 286121 894.03 1323 1283 318.6
D 2 136 176849 551.06 1323 1283 318.6

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