ASTROSAT CZTI

Data Quality Report

Orbit 09883

Creation date: 2024-06-27T15:51:49.718532
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/AS1A03_117T06_9000001404_09883cztM0_level2.evt modeM0/AS1A03_117T06_9000001404_09883cztM0_level2_quad_clean.evt
Size (bytes)456,600,96097,467,840
Size435.4 MB 93.0 MB
Events in quadrant A3,292,227619,698
Events in quadrant B3,306,916643,614
Events in quadrant C3,431,254623,269
Events in quadrant D3,336,910593,440

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015124765
B015035705
C015553731
D015388716

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01466
B01468
C01466
D01466

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6754891.317738%
B67801061.563422%
C67741341.978152%
D67761201.770956%

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 9326 6953 0 0 0.00% 0.00%
B 9326 6978 3 3 0.03% 0.04%
C 9326 6976 39 39 0.42% 0.56%
D 9326 6981 42 42 0.45% 0.60%

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 13 251 75109 441.24 835 819 168.4
A 0 226 7375 38.94 835 819 168.4
A 15 239 7135 37.51 835 819 168.4
B 12 111 19176 112.59 846 821 163.0
B 4 81 16905 98.66 846 821 163.0
B 11 111 15875 92.34 846 821 163.0
C 4 254 134586 703.47 826 832 190.1
C 14 234 72864 378.85 826 832 190.1
C 13 61 6066 27.53 826 832 190.1
D 1 52 143719 679.54 813 797 210.3
D 2 14 39701 184.98 813 797 210.3
D 8 195 35961 167.19 813 797 210.3

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