ASTROSAT CZTI

Data Quality Report

Orbit 25397

Creation date: 2024-06-27T19:17:12.213221
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/AS1A09_057T04_9000003712_25397cztM0_level2.evt modeM0/AS1A09_057T04_9000003712_25397cztM0_level2_quad_clean.evt
Size (bytes)1,208,545,920214,571,520
Size1.1 GB 204.6 MB
Events in quadrant A7,303,1611,401,227
Events in quadrant B7,132,9511,411,326
Events in quadrant C7,127,4531,348,870
Events in quadrant D14,018,7841,296,575

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0312630
B0310240
C0307270
D0520060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15092570.377684%
B15092900.596342%
C150921330.881262%
D1509214529.620991%

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 16152 15093 0 0 0.00% 0.00%
B 16152 15092 2 2 0.01% 0.01%
C 16152 15092 1 1 0.01% 0.01%
D 16152 15093 1247 1247 7.72% 8.26%

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 6 16 290979 798.5 1803 1762 362.2
A 15 173 59226 158.65 1803 1762 362.2
A 13 254 22699 57.81 1803 1762 362.2
B 0 190 75583 218.22 1785 1740 338.4
B 12 111 42458 120.33 1785 1740 338.4
B 11 111 38336 108.15 1785 1740 338.4
C 14 238 274616 672.69 1736 1748 405.6
C 7 247 44452 105.28 1736 1748 405.6
C 3 233 22911 52.17 1736 1748 405.6
D 1 52 4235182 10274.07 1706 1654 412.1
D 8 195 1524347 3695.32 1706 1654 412.1
D 7 238 1358434 3292.68 1706 1654 412.1

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