ASTROSAT CZTI

Data Quality Report

Orbit 35455

Creation date: 2022-04-21T00:41:03.276428
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/AS1A11_068T03_9000005076_35455cztM0_level2.evt modeM0/AS1A11_068T03_9000005076_35455cztM0_level2_quad_clean.evt
Size (bytes)606,729,60079,153,920
Size578.6 MB 75.5 MB
Events in quadrant A2,912,965528,156
Events in quadrant B8,233,240438,300
Events in quadrant C3,265,575523,793
Events in quadrant D3,559,859490,245

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123013
B0284082
C0130752
D0143902

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A595180.134431%
B5951211035.456226%
C5951711.193077%
D59512103.528819%

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 7294 5952 2 2 0.03% 0.03%
B 7294 5952 1624 1624 22.26% 27.28%
C 7294 5952 41 41 0.56% 0.69%
D 7294 5952 143 143 1.96% 2.40%

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 10 83 136240 966.07 698 683 140.3
A 13 6 49713 349.42 698 683 140.3
A 9 143 22634 156.44 698 683 140.3
B 4 251 5369540 45328.15 606 591 118.4
B 5 236 181025 1523.34 606 591 118.4
B 5 172 152548 1282.92 606 591 118.4
C 15 214 246205 1552.98 675 678 158.1
C 0 10 235202 1483.39 675 678 158.1
C 14 67 65556 410.36 675 678 158.1
D 10 118 197677 1191.36 670 652 165.4
D 12 233 197102 1187.89 670 652 165.4
D 12 6 171799 1034.88 670 652 165.4

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