ASTROSAT CZTI

Data Quality Report

Orbit 20190201_A05_019T01_9000002688_level2

Creation date: 2025-11-26T22:42:59.582367
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_019T01_9000002688cztM0_level2.fits modeM0/AS1A05_019T01_9000002688cztM0_level2_quad_clean.evt
Size (bytes)1,191,355,2001,102,988,160
Size1.1 GB 1.0 GB
Events in quadrant A7,511,4426,826,568
Events in quadrant B7,141,8666,781,406
Events in quadrant C7,146,8866,353,923
Events in quadrant D5,928,4725,095,540

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02613170
B02648120
C02532380
D04022100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02050
B02050
C02050
D02050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A024800
B024800
C024800
D024800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12180519031.562333%
B12180520001.641969%
C12180516891.386643%
D1218051434411.776200%

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 142095 121799 0 0 0.00% 0.00%
B 142095 121793 0 0 0.00% 0.00%
C 142095 121802 0 0 0.00% 0.00%
D 142095 121488 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 6812 10.41 1954 1837 478.1
A 7 110 6049 8.81 1954 1837 478.1
A 9 19 5657 7.99 1954 1837 478.1
B 2 9 5663 10.53 1885 1800 366.9
B 2 8 4843 8.29 1885 1800 366.9
B 3 17 4780 8.12 1885 1800 366.9
C 1 80 5356 7.48 1886 1758 480.8
C 1 81 5242 7.25 1886 1758 480.8
C 12 241 4954 6.65 1886 1758 480.8
D 10 190 4401 6.37 1693 1536 449.6
D 3 14 4335 6.22 1693 1536 449.6
D 6 231 4258 6.05 1693 1536 449.6

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