ASTROSAT CZTI

Data Quality Report

Orbit 20160724_G05_253T01_9000000560_level2

Creation date: 2025-11-04T11:33:57.641460
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/AS1G05_253T01_9000000560cztM0_level2.fits modeM0/AS1G05_253T01_9000000560cztM0_level2_quad_clean.evt
Size (bytes)1,051,876,8001,098,115,200
Size1003.1 MB 1.0 GB
Events in quadrant A6,248,7346,557,220
Events in quadrant B6,086,8886,532,105
Events in quadrant C6,244,6506,401,179
Events in quadrant D5,295,2325,790,532

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A023130
B023220
C022740
D022710

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01770
C01780
D01780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02482430
B02493900
C02447830
D02769330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11663819901.706134%
B11665916591.422093%
C11675010800.925054%
D11661139813.413915%

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 147129 117698 0 0 0.00% 0.00%
B 147129 117715 0 0 0.00% 0.00%
C 147129 117782 0 0 0.00% 0.00%
D 147129 117636 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 14 188 6131 10.92 1625 1511 422.9
A 7 110 5373 9.13 1625 1511 422.9
A 0 29 5357 9.09 1625 1511 422.9
B 2 9 5314 11.6 1606 1522 326.8
B 12 226 4464 9.0 1606 1522 326.8
B 5 128 4240 8.32 1606 1522 326.8
C 1 80 4583 7.01 1648 1520 436.9
C 1 81 4528 6.88 1648 1520 436.9
C 12 241 4435 6.67 1648 1520 436.9
D 11 82 4445 7.6 1511 1371 404.2
D 4 160 4073 6.68 1511 1371 404.2
D 3 14 3970 6.43 1511 1371 404.2

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