ASTROSAT CZTI

Data Quality Report

Orbit 11204

Creation date: 2024-06-27T16:09:42.751158
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_171T01_9000001634_11204cztM0_level2.evt modeM0/AS1A04_171T01_9000001634_11204cztM0_level2_quad_clean.evt
Size (bytes)659,134,08081,492,480
Size628.6 MB 77.7 MB
Events in quadrant A9,653,843413,074
Events in quadrant B3,573,741546,463
Events in quadrant C2,979,878545,595
Events in quadrant D3,320,254514,342

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0332333
B0147352
C0130362
D0141622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6412231336.072988%
B64121802.807236%
C641280.124766%
D6412410.639426%

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 7657 6413 1788 1788 23.35% 27.88%
B 7657 6413 95 95 1.24% 1.48%
C 7657 6413 0 0 0.00% 0.00%
D 7657 6413 25 25 0.33% 0.39%

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 6510137 49929.74 646 634 130.4
A 8 15 449846 3445.58 646 634 130.4
A 8 5 132625 1012.41 646 634 130.4
B 4 239 406153 2787.32 769 749 145.4
B 4 80 80794 550.34 769 749 145.4
B 4 81 23560 156.84 769 749 145.4
C 13 61 5473 26.53 764 768 177.4
C 3 202 1871 6.22 764 768 177.4
C 7 159 1684 5.16 764 768 177.4
D 2 136 108916 608.44 746 726 177.8
D 14 34 100127 559.01 746 726 177.8
D 2 14 65877 366.4 746 726 177.8

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