ASTROSAT CZTI

Data Quality Report

Orbit 20190623_A06_005T02_9000002996_level2

Creation date: 2025-12-01T16:48:04.644297
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/AS1A06_005T02_9000002996cztM0_level2.fits modeM0/AS1A06_005T02_9000002996cztM0_level2_quad_clean.evt
Size (bytes)688,760,640605,813,760
Size656.9 MB 577.7 MB
Events in quadrant A4,293,9323,634,882
Events in quadrant B4,081,3403,586,411
Events in quadrant C4,154,0663,362,664
Events in quadrant D3,615,2703,047,073

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01451620
B01515180
C01436440
D01617680

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013960
B013960
C013960
D013960

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01210
B01210
C01210
D01210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A687698931.298550%
B6876911101.614099%
C6876910221.486135%
D6876915752.290276%

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 80629 68768 0 0 0.00% 0.00%
B 80629 68768 0 0 0.00% 0.00%
C 80629 68769 0 0 0.00% 0.00%
D 80629 68762 0 0 0.00% 0.00%

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 0 29 4377 11.96 1117 1050 278.3
A 7 110 3381 8.38 1117 1050 278.3
A 0 30 3341 8.23 1117 1050 278.3
B 2 9 3191 10.28 1080 1033 209.9
B 5 128 2721 8.04 1080 1033 209.9
B 14 254 2713 8.01 1080 1033 209.9
C 1 81 3227 7.92 1097 1029 277.6
C 1 80 3187 7.77 1097 1029 277.6
C 12 241 2842 6.53 1097 1029 277.6
D 3 14 2644 6.21 1035 946 273.6
D 7 3 2565 5.92 1035 946 273.6
D 10 189 2557 5.89 1035 946 273.6

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