ASTROSAT CZTI

Data Quality Report

Orbit 39782

Creation date: 2024-06-27T22:08:57.108354
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/AS1T05_086T01_9000005496_39782cztM0_level2.fits modeM0/AS1T05_086T01_9000005496_39782cztM0_level2_quad_clean.evt
Size (bytes)460,301,76094,921,920
Size439.0 MB 90.5 MB
Events in quadrant A2,943,122704,956
Events in quadrant B3,202,927696,884
Events in quadrant C4,513,457649,257
Events in quadrant D5,981,480463,998

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118262
B0127851
C0168891
D0212521

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5123250.487995%
B51231262.459496%
C51232094.079641%
D5123133726.097989%

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 7156 5124 17 17 0.24% 0.33%
B 7156 5124 97 97 1.36% 1.89%
C 7156 5124 249 249 3.48% 4.86%
D 7156 5124 1299 1299 18.15% 25.35%

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 10 83 430131 3370.45 605 596 127.4
A 9 143 61404 477.14 605 596 127.4
A 2 79 57440 446.04 605 596 127.4
B 5 172 689820 5881.83 595 582 117.2
B 5 32 75369 638.22 595 582 117.2
B 0 190 43164 363.39 595 582 117.2
C 9 187 1107348 7961.57 581 589 139.0
C 15 208 550084 3952.84 581 589 139.0
C 14 254 358851 2577.19 581 589 139.0
D 12 233 3028222 22943.99 526 513 132.0
D 12 227 270546 2046.31 526 513 132.0
D 6 240 257115 1944.53 526 513 132.0

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