ASTROSAT CZTI

Data Quality Report

Orbit 45836

Creation date: 2024-06-27T23:16:42.064998
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/AS1T05_185T01_9000006128_45836cztM0_level2.fits modeM0/AS1T05_185T01_9000006128_45836cztM0_level2_quad_clean.evt
Size (bytes)622,177,920108,469,440
Size593.4 MB 103.4 MB
Events in quadrant A6,130,994748,085
Events in quadrant B6,335,824718,333
Events in quadrant C3,064,553771,427
Events in quadrant D7,001,414597,676

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222502
B0234115
C0134072
D0252512

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64382614.054054%
B643791214.168091%
C6437490.761224%
D6438105716.418142%

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 7633 6439 71 71 0.93% 1.10%
B 7633 6439 411 411 5.38% 6.38%
C 7633 6439 3 3 0.04% 0.05%
D 7633 6439 867 867 11.36% 13.46%

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 10 83 2943078 19147.49 748 731 153.7
A 13 248 229844 1490.97 748 731 153.7
A 7 3 49297 316.05 748 731 153.7
B 3 112 2638093 18913.33 727 706 139.4
B 12 18 404193 2893.5 727 706 139.4
B 4 171 86929 618.33 727 706 139.4
C 2 14 60409 334.28 762 766 178.4
C 5 128 19061 102.54 762 766 178.4
C 3 233 12767 67.26 762 766 178.4
D 1 52 1372527 7827.63 707 686 175.3
D 11 241 1080052 6158.79 707 686 175.3
D 13 249 1032064 5884.97 707 686 175.3

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