ASTROSAT CZTI

Data Quality Report

Orbit 15360

Creation date: 2024-06-27T17:07:25.859235
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/AS1A04_126T01_9000002262_15360cztM0_level2.evt modeM0/AS1A04_126T01_9000002262_15360cztM0_level2_quad_clean.evt
Size (bytes)475,891,20097,859,520
Size453.8 MB 93.3 MB
Events in quadrant A3,180,684630,125
Events in quadrant B3,779,057632,487
Events in quadrant C3,297,073628,994
Events in quadrant D3,691,885596,127

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141513
B0157282
C0143552
D0155362

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6830160.234261%
B68301001.464129%
C683090.131772%
D6830971.420205%

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 7631 6832 3 3 0.04% 0.04%
B 7631 6832 72 72 0.94% 1.05%
C 7631 6832 5 5 0.07% 0.07%
D 7631 6832 82 82 1.07% 1.20%

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 15 239 54004 328.27 802 786 162.1
A 9 143 38923 235.24 802 786 162.1
A 13 248 7836 43.49 802 786 162.1
B 10 16 395765 2584.79 803 784 152.8
B 4 173 64673 418.09 803 784 152.8
B 0 190 46802 301.15 803 784 152.8
C 3 233 268860 1496.79 773 779 179.1
C 13 61 5517 26.45 773 779 179.1
C 4 238 5414 25.88 773 779 179.1
D 13 122 321016 1710.48 767 743 187.2
D 7 38 261770 1394.07 767 743 187.2
D 2 33 73370 387.88 767 743 187.2

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