ASTROSAT CZTI

Data Quality Report

Orbit 22588

Creation date: 2024-06-27T18:43:14.318220
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/AS1C05_001T01_9000003354_22588cztM0_level2.evt modeM0/AS1C05_001T01_9000003354_22588cztM0_level2_quad_clean.evt
Size (bytes)752,503,680205,859,520
Size717.6 MB 196.3 MB
Events in quadrant A5,115,5951,389,740
Events in quadrant B5,864,1361,399,343
Events in quadrant C5,164,7491,348,275
Events in quadrant D5,880,9071,317,989

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228601
B0249041
C0228891
D0251211

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A112701231.091393%
B112702482.200532%
C112711771.570402%
D112712652.351167%

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 11806 11271 0 0 0.00% 0.00%
B 11806 11271 34 34 0.29% 0.30%
C 11807 11272 6 6 0.05% 0.05%
D 11807 11272 127 127 1.08% 1.13%

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 11 47 61436 229.13 1309 1280 262.5
A 13 254 19137 68.02 1309 1280 262.5
A 3 137 11327 38.27 1309 1280 262.5
B 15 33 436822 1769.48 1304 1269 246.1
B 15 35 115342 463.43 1304 1269 246.1
B 0 190 71543 285.5 1304 1269 246.1
C 14 238 199594 675.83 1257 1262 293.5
C 10 22 29983 97.87 1257 1262 293.5
C 3 233 12766 39.2 1257 1262 293.5
D 1 52 713603 2319.87 1266 1229 307.1
D 12 227 215736 698.55 1266 1229 307.1
D 13 249 64970 207.57 1266 1229 307.1

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