ASTROSAT CZTI

Data Quality Report

Orbit 30176

Creation date: 2024-06-27T20:11:52.245895
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_102T01_9000004340_30176cztM0_level2.evt modeM0/AS1A10_102T01_9000004340_30176cztM0_level2_quad_clean.evt
Size (bytes)624,064,32091,589,760
Size595.2 MB 87.3 MB
Events in quadrant A3,237,870597,248
Events in quadrant B4,955,635601,477
Events in quadrant C6,487,637553,358
Events in quadrant D3,778,575567,029

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138852
B0196192
C0240142
D0155202

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6509691.060071%
B6509931.428791%
C65105318.156682%
D65101061.628264%

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 8534 6509 3 3 0.04% 0.05%
B 8534 6509 0 0 0.00% 0.00%
C 8535 6510 49 49 0.57% 0.75%
D 8535 6511 48 48 0.56% 0.74%

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 13 70599 428.43 814 797 162.9
A 8 192 24236 143.86 814 797 162.9
A 13 254 10752 61.1 814 797 162.9
B 6 159 1792414 11502.63 806 786 155.8
B 12 111 18950 116.62 806 786 155.8
B 11 111 17401 106.67 806 786 155.8
C 3 233 3243732 18063.85 765 769 179.5
C 14 238 155507 861.92 765 769 179.5
C 14 254 50618 277.67 765 769 179.5
D 1 52 403470 2082.94 785 767 193.3
D 8 195 181768 936.21 785 767 193.3
D 13 104 97589 500.8 785 767 193.3

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