ASTROSAT CZTI

Data Quality Report

Orbit 25965

Creation date: 2024-06-27T19:23:19.857665
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/AS1A07_068T01_9000003760_25965cztM0_level2.evt modeM0/AS1A07_068T01_9000003760_25965cztM0_level2_quad_clean.evt
Size (bytes)478,025,28096,114,240
Size455.9 MB 91.7 MB
Events in quadrant A3,342,002629,543
Events in quadrant B3,350,246633,213
Events in quadrant C3,367,877601,817
Events in quadrant D3,982,343599,704

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139480
B0139580
C0141780
D0161730

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6400400.625000%
B6401520.812373%
C64011091.702859%
D64011382.155913%

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 7566 6402 0 0 0.00% 0.00%
B 7566 6402 0 0 0.00% 0.00%
C 7566 6401 2 2 0.03% 0.03%
D 7566 6402 99 99 1.31% 1.55%

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 12230 66.62 864 849 170.8
A 13 254 8649 45.66 864 849 170.8
A 3 137 7459 38.69 864 849 170.8
B 12 111 19209 114.85 846 826 160.1
B 11 111 17439 103.79 846 826 160.1
B 0 245 17178 102.16 846 826 160.1
C 14 238 133110 697.5 820 826 189.7
C 3 233 20577 104.14 820 826 189.7
C 7 238 18069 90.92 820 826 189.7
D 1 52 734068 3775.0 831 814 194.2
D 12 233 77873 396.72 831 814 194.2
D 2 234 23518 116.89 831 814 194.2

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