ASTROSAT CZTI

Data Quality Report

Orbit 37462

Creation date: 2024-06-27T21:40:18.749206
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/AS1A11_027T01_9000005324_37462cztM0_level2.evt modeM0/AS1A11_027T01_9000005324_37462cztM0_level2_quad_clean.evt
Size (bytes)463,700,160107,337,600
Size442.2 MB 102.4 MB
Events in quadrant A3,620,651721,649
Events in quadrant B3,035,506744,691
Events in quadrant C2,902,537743,039
Events in quadrant D4,124,834670,268

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143353
B0123052
C0115702
D0157742

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5293380.717929%
B52931653.117325%
C5293581.095787%
D52934428.350652%

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 7327 5294 23 23 0.31% 0.43%
B 7327 5294 152 152 2.07% 2.87%
C 7327 5294 48 48 0.66% 0.91%
D 7327 5294 373 373 5.09% 7.05%

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 15 222 727342 5846.94 621 610 124.3
A 10 83 269507 2163.42 621 610 124.3
A 13 248 103961 831.51 621 610 124.3
B 5 200 291034 2509.86 619 603 115.7
B 5 172 180435 1554.08 619 603 115.7
B 4 171 32231 273.32 619 603 115.7
C 15 214 224698 1583.5 621 628 141.5
C 0 10 158103 1112.87 621 628 141.5
C 14 254 29170 201.71 621 628 141.5
D 13 249 1058718 7435.18 591 575 142.3
D 2 249 121030 846.39 591 575 142.3
D 2 153 119430 835.15 591 575 142.3

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