ASTROSAT CZTI

Data Quality Report

Orbit 28995

Creation date: 2024-06-27T19:58:57.028923
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_073T06_9000004156_28995cztM0_level2.evt modeM0/AS1A10_073T06_9000004156_28995cztM0_level2_quad_clean.evt
Size (bytes)470,424,96094,245,120
Size448.6 MB 89.9 MB
Events in quadrant A3,097,973616,829
Events in quadrant B3,421,247634,161
Events in quadrant C3,166,801595,697
Events in quadrant D4,128,611563,489

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132531
B0141071
C0133281
D0165261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6368240.376884%
B63681211.900126%
C6367741.162243%
D63671271.994660%

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 7493 6364 0 0 0.00% 0.00%
B 7493 6364 32 32 0.43% 0.50%
C 7492 6363 0 0 0.00% 0.00%
D 7492 6363 110 110 1.47% 1.73%

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 21669 131.97 796 781 158.3
A 13 254 11643 68.63 796 781 158.3
A 3 137 7478 42.31 796 781 158.3
B 10 245 211224 1405.07 798 778 149.8
B 10 246 64636 426.36 798 778 149.8
B 12 111 18524 118.48 798 778 149.8
C 14 238 124282 688.73 770 777 179.3
C 3 233 23667 127.65 770 777 179.3
C 2 114 15026 79.46 770 777 179.3
D 8 195 568251 3165.97 759 741 179.3
D 1 52 256538 1427.02 759 741 179.3
D 13 104 256000 1424.02 759 741 179.3

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