ASTROSAT CZTI

Data Quality Report

Orbit 25926

Creation date: 2024-06-27T19:22:55.129491
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/AS1T03_214T01_9000003758_25926cztM0_level2.evt modeM0/AS1T03_214T01_9000003758_25926cztM0_level2_quad_clean.evt
Size (bytes)838,797,12080,573,760
Size799.9 MB 76.8 MB
Events in quadrant A15,379,488171,621
Events in quadrant B3,032,111641,467
Events in quadrant C2,949,749604,130
Events in quadrant D3,634,859600,671

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0497760
B0128260
C0126210
D0148220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6005592598.667777%
B6006821.365301%
C6006851.415251%
D60051432.381349%

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 7139 6005 5403 5403 75.68% 89.98%
B 7141 6007 0 0 0.00% 0.00%
C 7141 6007 1 1 0.01% 0.02%
D 7140 6006 75 75 1.05% 1.25%

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 0 13 14242382 237255.69 294 289 60.0
A 13 254 3911 60.34 294 289 60.0
A 3 137 2578 38.13 294 289 60.0
B 15 33 39081 271.45 746 731 141.3
B 0 190 38889 270.09 746 731 141.3
B 0 219 30303 209.32 746 731 141.3
C 14 238 113891 696.34 705 709 162.5
C 3 233 59465 361.49 705 709 162.5
C 2 16 28230 169.32 705 709 162.5
D 1 52 861972 5027.69 715 697 171.3
D 2 234 26759 152.14 715 697 171.3
D 7 80 24533 139.14 715 697 171.3

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