ASTROSAT CZTI

Data Quality Report

Orbit 05122

Creation date: 2024-06-27T14:51:36.171682
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/AS1G05_230T05_9000000648_05122cztM0_level2.evt modeM0/AS1G05_230T05_9000000648_05122cztM0_level2_quad_clean.evt
Size (bytes)1,033,476,480137,733,120
Size985.6 MB 131.4 MB
Events in quadrant A5,261,323882,584
Events in quadrant B5,857,401916,165
Events in quadrant C5,292,741916,282
Events in quadrant D14,099,010648,282

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02400
B02402
C02404
D02404

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024006163
B025290187
C023956167
D050675886

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11684260.222527%
B11680710.607877%
C11682250.214004%
D11598300725.926884%

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 14137 11766 4 4 0.03% 0.03%
B 14137 11760 16 16 0.11% 0.14%
C 14137 11763 1 1 0.01% 0.01%
D 14136 11709 2617 2617 18.51% 22.35%

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 50 53652 191.41 1349 1320 273.4
A 0 226 13614 44.97 1349 1320 273.4
A 12 194 13478 44.47 1349 1320 273.4
B 8 3 198918 762.28 1376 1345 259.2
B 10 16 109479 417.21 1376 1345 259.2
B 15 204 108666 414.07 1376 1345 259.2
C 13 61 10730 30.15 1351 1359 310.8
C 14 225 7969 21.27 1351 1359 310.8
C 1 16 7439 19.56 1351 1359 310.8
D 12 22 5073868 18733.91 1117 1085 270.8
D 13 235 1699758 6273.24 1117 1085 270.8
D 13 239 1472358 5433.45 1117 1085 270.8

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