ASTROSAT CZTI

Data Quality Report

Orbit 23964

Creation date: 2024-06-27T19:00:32.553636
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/AS1A07_101T02_9000003544_23964cztM0_level2.evt modeM0/AS1A07_101T02_9000003544_23964cztM0_level2_quad_clean.evt
Size (bytes)278,328,96070,050,240
Size265.4 MB 66.8 MB
Events in quadrant A1,847,205462,853
Events in quadrant B1,897,108469,820
Events in quadrant C1,919,335458,421
Events in quadrant D2,484,092439,902

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A085161
B085831
C086341
D0104021

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4119300.728332%
B4120691.674757%
C4120761.844660%
D41201884.563107%

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 4444 4120 0 0 0.00% 0.00%
B 4445 4121 0 0 0.00% 0.00%
C 4445 4121 1 1 0.02% 0.02%
D 4445 4121 116 116 2.61% 2.81%

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 6859 64.97 478 468 98.4
A 3 137 4312 39.08 478 468 98.4
A 0 226 4088 36.8 478 468 98.4
B 12 111 11521 118.38 480 469 93.4
B 0 197 10668 109.24 480 469 93.4
B 11 111 9859 100.58 480 469 93.4
C 14 238 72990 667.08 462 467 108.7
C 0 239 41128 374.01 462 467 108.7
C 13 61 3193 25.07 462 467 108.7
D 12 218 581521 5210.64 455 442 111.5
D 1 52 107783 962.55 455 442 111.5
D 12 250 32310 285.77 455 442 111.5

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