ASTROSAT CZTI

Data Quality Report

Orbit 28636

Creation date: 2024-06-27T19:54:17.710443
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/AS1A10_045T07_9000004110_28636cztM0_level2.evt modeM0/AS1A10_045T07_9000004110_28636cztM0_level2_quad_clean.evt
Size (bytes)1,097,844,480153,095,040
Size1.0 GB 146.0 MB
Events in quadrant A6,304,391957,425
Events in quadrant B7,030,137961,197
Events in quadrant C6,319,200941,553
Events in quadrant D12,730,029891,164

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0269022
B0290742
C0268102
D0467822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128142041.592009%
B128153832.988685%
C128153883.027702%
D12815148611.595786%

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 13354 12816 12 12 0.09% 0.09%
B 13355 12817 99 99 0.74% 0.77%
C 13355 12817 1 1 0.01% 0.01%
D 13355 12817 871 871 6.52% 6.80%

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 98 47126 141.15 1599 1566 322.8
A 15 174 46033 137.76 1599 1566 322.8
A 13 6 23858 69.06 1599 1566 322.8
B 10 245 717640 2409.2 1565 1522 297.2
B 10 246 116526 386.9 1565 1522 297.2
B 12 111 37451 120.87 1565 1522 297.2
C 14 238 275289 764.71 1531 1545 358.0
C 14 254 45430 122.59 1531 1545 358.0
C 0 207 18517 47.41 1531 1545 358.0
D 1 52 2946045 8163.89 1496 1456 360.7
D 8 195 1758069 4870.22 1496 1456 360.7
D 13 104 1722644 4772.0 1496 1456 360.7

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