ASTROSAT CZTI

Data Quality Report

Orbit 12873

Creation date: 2024-06-27T16:33:24.871976
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/AS1G08_041T01_9000001892_12873cztM0_level2.evt modeM0/AS1G08_041T01_9000001892_12873cztM0_level2_quad_clean.evt
Size (bytes)753,935,04086,636,160
Size719.0 MB 82.6 MB
Events in quadrant A4,429,396531,754
Events in quadrant B8,633,892486,406
Events in quadrant C3,826,345532,890
Events in quadrant D5,388,014502,037

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0184883
B0311672
C0169882
D0216772

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82002342.853659%
B8200204224.902439%
C8200821.000000%
D82005116.231707%

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 8701 8204 45 45 0.52% 0.55%
B 8701 8204 1289 1289 14.81% 15.71%
C 8701 8204 0 0 0.00% 0.00%
D 8701 8204 427 427 4.91% 5.20%

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 13 248 431465 2073.22 1006 981 207.6
A 8 15 34445 161.16 1006 981 207.6
A 15 174 33519 156.7 1006 981 207.6
B 0 85 2933747 16848.49 908 886 174.1
B 4 239 1724832 9903.6 908 886 174.1
B 0 219 213073 1218.96 908 886 174.1
C 4 112 7910 30.26 976 978 229.1
C 13 61 7052 26.52 976 978 229.1
C 8 128 5433 19.45 976 978 229.1
D 1 52 1345089 5788.58 953 924 232.2
D 4 95 226887 973.1 953 924 232.2
D 2 136 59215 251.03 953 924 232.2

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