ASTROSAT CZTI

Data Quality Report

Orbit 31822

Creation date: 2024-06-27T20:33:10.435928
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/AS1A10_109T01_9000004646_31822cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31822cztM0_level2_quad_clean.evt
Size (bytes)1,090,808,640172,252,800
Size1.0 GB 164.3 MB
Events in quadrant A5,907,1441,132,479
Events in quadrant B10,512,1931,108,784
Events in quadrant C8,626,2511,066,297
Events in quadrant D7,156,1021,054,803

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02520
B02520
C02520
D02520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256033
B0397168
C0342003
D0297513

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12360610.493528%
B123594203.398333%
C123606795.493528%
D12360770.622977%

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 12890 12364 0 0 0.00% 0.00%
B 12889 12363 78 78 0.61% 0.63%
C 12890 12364 142 142 1.10% 1.15%
D 12890 12364 30 30 0.23% 0.24%

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 13 254 21844 66.44 1527 1496 306.3
A 3 137 15759 46.57 1527 1496 306.3
A 13 6 12747 36.74 1527 1496 306.3
B 6 159 3377468 11780.93 1496 1459 286.6
B 10 245 587206 2044.02 1496 1459 286.6
B 3 209 327784 1138.74 1496 1459 286.6
C 3 233 2169850 6305.85 1452 1464 343.9
C 0 10 375706 1088.33 1452 1464 343.9
C 14 238 269320 778.95 1452 1464 343.9
D 8 195 1186575 3356.51 1480 1444 353.1
D 2 250 107498 300.36 1480 1444 353.1
D 12 218 106880 298.61 1480 1444 353.1

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