ASTROSAT CZTI

Data Quality Report

Orbit 20190808_A06_002T03_9000003080_level2

Creation date: 2025-12-02T23:04:46.888355
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_002T03_9000003080cztM0_level2.fits modeM0/AS1A06_002T03_9000003080cztM0_level2_quad_clean.evt
Size (bytes)1,421,020,800912,510,720
Size1.3 GB 870.2 MB
Events in quadrant A3,924,7604,400,915
Events in quadrant B9,628,9204,373,744
Events in quadrant C9,910,2664,267,372
Events in quadrant D8,390,6433,414,470

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02570
B02570
C02570
D02580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03426990
B03641260
C03440520
D05080000

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033240
B033180
C033120
D033180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16308319971.224530%
B16307628691.759302%
C16306730451.867331%
D163068139788.571884%

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 196387 62951 0 0 0.00% 0.00%
B 1043651 163297 0 0 0.00% 0.00%
C 1043651 163271 0 0 0.00% 0.00%
D 1043650 163186 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 3759 11.21 1021 959 249.8
A 7 110 3139 8.73 1021 959 249.8
A 9 19 2987 8.12 1021 959 249.8
B 2 9 7704 10.71 2549 2440 491.4
B 2 8 6432 8.12 2549 2440 491.4
B 5 128 6314 7.88 2549 2440 491.4
C 12 241 6700 6.34 2621 2458 669.0
C 2 191 6629 6.24 2621 2458 669.0
C 12 250 6618 6.22 2621 2458 669.0
D 3 14 6166 6.26 2400 2193 635.0
D 7 3 5909 5.85 2400 2193 635.0
D 10 189 5858 5.77 2400 2193 635.0

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