ASTROSAT CZTI

Data Quality Report

Orbit 27216

Creation date: 2024-06-27T19:37:49.554347
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/AS1T03_243T01_9000003918_27216cztM0_level2.evt modeM0/AS1T03_243T01_9000003918_27216cztM0_level2_quad_clean.evt
Size (bytes)616,435,200102,850,560
Size587.9 MB 98.1 MB
Events in quadrant A3,848,368672,929
Events in quadrant B3,706,349685,762
Events in quadrant C3,535,855656,632
Events in quadrant D7,085,410592,953

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161370
B0155430
C0151250
D0260180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72661572.160749%
B72671682.311821%
C72671462.009082%
D7267114715.783680%

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 8736 7268 38 38 0.43% 0.52%
B 8737 7269 19 19 0.22% 0.26%
C 8737 7269 0 0 0.00% 0.00%
D 8737 7268 807 807 9.24% 11.10%

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 14 235 248602 1353.01 905 886 183.1
A 13 248 87762 474.51 905 886 183.1
A 8 192 15186 78.11 905 886 183.1
B 5 172 78077 445.08 902 878 173.5
B 0 190 33478 187.95 902 878 173.5
B 12 111 20858 115.19 902 878 173.5
C 14 238 138496 675.54 866 871 203.7
C 2 16 16475 76.59 866 871 203.7
C 15 208 7088 30.52 866 871 203.7
D 1 52 3263118 15983.94 803 783 204.1
D 5 222 237737 1160.97 803 783 204.1
D 12 233 205925 1005.1 803 783 204.1

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