ASTROSAT CZTI

Data Quality Report

Orbit 12696

Creation date: 2024-06-27T16:31:12.429831
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_174T01_9000001876_12696cztM0_level2.evt modeM0/AS1A04_174T01_9000001876_12696cztM0_level2_quad_clean.evt
Size (bytes)519,822,72086,529,600
Size495.7 MB 82.5 MB
Events in quadrant A2,937,383578,652
Events in quadrant B5,681,748506,680
Events in quadrant C2,895,922573,407
Events in quadrant D3,805,829527,280

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128032
B0210331
C0127621
D0153941

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6218220.353812%
B621896515.519460%
C6218140.225153%
D62182433.908009%

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 7179 6220 0 0 0.00% 0.00%
B 7179 6220 762 762 10.61% 12.25%
C 7179 6220 0 0 0.00% 0.00%
D 7179 6220 223 223 3.11% 3.59%

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 12 189 21538 134.76 756 740 154.3
A 8 15 10924 65.99 756 740 154.3
A 0 226 6740 38.88 756 740 154.3
B 4 239 2272569 17213.68 694 679 132.0
B 0 85 333229 2519.67 694 679 132.0
B 3 64 207282 1565.39 694 679 132.0
C 15 208 27291 154.85 735 741 171.4
C 13 61 5421 27.29 735 741 171.4
C 14 234 3591 16.62 735 741 171.4
D 1 52 988968 5283.82 712 701 187.0
D 8 195 57731 304.91 712 701 187.0
D 2 234 24036 124.76 712 701 187.0

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