ASTROSAT CZTI

Data Quality Report

Orbit 46526

Creation date: 2024-06-27T23:24:15.470210
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/AS1A13_091T05_9000006224_46526cztM0_level2.fits modeM0/AS1A13_091T05_9000006224_46526cztM0_level2_quad_clean.evt
Size (bytes)825,065,280164,750,400
Size786.8 MB 157.1 MB
Events in quadrant A10,831,1661,076,274
Events in quadrant B8,313,8421,047,218
Events in quadrant C5,243,5441,108,298
Events in quadrant D5,327,5331,018,064

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0394252
B0319242
C0232902
D0235183

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02160
B02160
C02160
D02160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106635425.082997%
B10663116010.878740%
C106631451.359842%
D106621581.481898%

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 11543 10663 141 141 1.22% 1.32%
B 11543 10663 637 637 5.52% 5.97%
C 11543 10664 50 50 0.43% 0.47%
D 11542 10664 54 54 0.47% 0.51%

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 10 83 5025067 20047.53 1194 1165 250.6
A 9 191 983175 3918.64 1194 1165 250.6
A 13 248 134678 532.77 1194 1165 250.6
B 12 33 1865659 8153.85 1154 1120 228.7
B 15 201 545800 2381.95 1154 1120 228.7
B 5 255 354802 1546.69 1154 1120 228.7
C 14 254 317545 1111.34 1194 1199 284.7
C 9 54 219669 767.49 1194 1199 284.7
C 1 3 12182 38.58 1194 1199 284.7
D 1 52 149273 491.26 1194 1160 301.5
D 13 249 141331 464.92 1194 1160 301.5
D 2 37 82576 270.04 1194 1160 301.5

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