ASTROSAT CZTI

Data Quality Report

Orbit 05587

Creation date: 2024-06-27T14:56:56.801034
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/AS1A02_081T01_9000000720_05587cztM0_level2.evt modeM0/AS1A02_081T01_9000000720_05587cztM0_level2_quad_clean.evt
Size (bytes)436,561,92093,934,080
Size416.3 MB 89.6 MB
Events in quadrant A2,908,440626,997
Events in quadrant B3,287,674624,166
Events in quadrant C2,824,312601,309
Events in quadrant D3,788,468568,618

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125352
B0136061
C0124201
D0152311

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60651011.665293%
B60651402.308326%
C6065791.302556%
D60651933.182193%

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 7285 6066 0 0 0.00% 0.00%
B 7285 6066 15 15 0.21% 0.25%
C 7285 6066 0 0 0.00% 0.00%
D 7285 6065 75 75 1.03% 1.24%

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 0 226 7945 47.6 752 738 151.4
A 12 194 7441 44.27 752 738 151.4
A 0 149 5150 29.14 752 738 151.4
B 15 204 122910 867.45 747 732 140.8
B 0 214 105140 741.29 747 732 140.8
B 15 54 59360 416.25 747 732 140.8
C 13 61 5893 31.06 721 724 166.4
C 1 16 3415 16.17 721 724 166.4
C 12 4 2760 12.23 721 724 166.4
D 2 136 331184 1880.16 720 695 175.8
D 2 152 240506 1364.29 720 695 175.8
D 8 195 181829 1030.47 720 695 175.8

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