ASTROSAT CZTI

Data Quality Report

Orbit 27939

Creation date: 2024-06-27T19:46:13.476661
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_016T01_9000004034_27939cztM0_level2.evt modeM0/AS1A10_016T01_9000004034_27939cztM0_level2_quad_clean.evt
Size (bytes)523,100,16071,236,800
Size498.9 MB 67.9 MB
Events in quadrant A3,386,406432,094
Events in quadrant B3,449,734434,329
Events in quadrant C3,775,087416,562
Events in quadrant D4,779,782410,101

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138880
B0140750
C0151760
D0189110

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6648691.037906%
B6648781.173285%
C66491692.541736%
D66491932.902692%

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 7543 6648 1 1 0.01% 0.02%
B 7543 6648 1 1 0.01% 0.02%
C 7544 6649 23 23 0.30% 0.35%
D 7544 6649 118 118 1.56% 1.77%

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 10260 53.16 875 859 176.9
A 3 137 8170 41.34 875 859 176.9
A 0 226 7457 37.31 875 859 176.9
B 0 230 33476 199.05 862 842 163.9
B 12 111 19831 115.82 862 842 163.9
B 10 245 19242 112.23 862 842 163.9
C 2 16 228817 1160.13 836 845 196.5
C 14 238 133186 673.47 836 845 196.5
C 3 233 89427 450.79 836 845 196.5
D 8 195 492759 2440.16 845 821 201.6
D 1 52 406362 2011.6 845 821 201.6
D 2 250 296153 1464.93 845 821 201.6

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