ASTROSAT CZTI

Data Quality Report

Orbit 25028

Creation date: 2024-06-27T19:12:57.088307
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_134T03_9000003670_25028cztM0_level2.evt modeM0/AS1A07_134T03_9000003670_25028cztM0_level2_quad_clean.evt
Size (bytes)477,221,760104,500,800
Size455.1 MB 99.7 MB
Events in quadrant A3,128,589687,746
Events in quadrant B3,468,775710,792
Events in quadrant C3,569,486678,509
Events in quadrant D3,871,729661,912

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129532
B0141592
C0144162
D0152192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6101420.688412%
B6101641.049008%
C61011262.065235%
D61011853.032290%

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 7431 6102 0 0 0.00% 0.00%
B 7431 6102 5 5 0.07% 0.08%
C 7431 6102 12 12 0.16% 0.20%
D 7431 6102 129 129 1.74% 2.11%

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 11 208 9986 56.47 810 793 162.8
A 13 254 7780 42.92 810 793 162.8
A 3 137 6904 37.54 810 793 162.8
B 3 64 194360 1273.9 813 796 151.9
B 4 80 58903 382.42 813 796 151.9
B 0 190 28380 181.54 813 796 151.9
C 0 239 210616 1128.66 793 804 185.9
C 14 238 128041 684.46 793 804 185.9
C 7 247 119063 636.16 793 804 185.9
D 1 52 699350 3688.62 791 770 189.4
D 8 195 83746 438.13 791 770 189.4
D 7 238 71534 373.65 791 770 189.4

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