ASTROSAT CZTI

Data Quality Report

Orbit 20509

Creation date: 2024-06-27T18:16:09.986140
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/AS1A05_115T01_9000003030_20509cztM0_level2.evt modeM0/AS1A05_115T01_9000003030_20509cztM0_level2_quad_clean.evt
Size (bytes)510,923,52090,250,560
Size487.3 MB 86.1 MB
Events in quadrant A3,294,480598,343
Events in quadrant B3,311,836613,659
Events in quadrant C3,071,394575,823
Events in quadrant D5,387,216524,358

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136061
B0136831
C0128861
D0201171

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6019600.996843%
B6020370.614618%
C6019380.631334%
D60194106.811763%

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 7354 6020 34 34 0.46% 0.56%
B 7355 6020 1 1 0.01% 0.02%
C 7354 6020 1 1 0.01% 0.02%
D 7354 6020 400 400 5.44% 6.64%

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 5 16 177724 1136.86 773 758 155.7
A 12 96 138337 883.83 773 758 155.7
A 13 254 7421 42.8 773 758 155.7
B 0 189 122985 850.9 779 761 143.6
B 0 190 43838 299.89 779 761 143.6
B 0 219 39392 268.94 779 761 143.6
C 14 238 118182 677.03 744 751 173.5
C 3 9 33550 189.1 744 751 173.5
C 3 233 8821 46.53 744 751 173.5
D 7 38 533318 2994.87 730 709 177.8
D 2 16 521768 2929.92 730 709 177.8
D 1 52 479793 2693.9 730 709 177.8

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