ASTROSAT CZTI

Data Quality Report

Orbit 24320

Creation date: 2024-06-27T19:04:43.902025
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_145T01_9000003594_24320cztM0_level2.evt modeM0/AS1A07_145T01_9000003594_24320cztM0_level2_quad_clean.evt
Size (bytes)540,267,84095,201,280
Size515.2 MB 90.8 MB
Events in quadrant A3,152,743609,385
Events in quadrant B4,872,837620,700
Events in quadrant C4,125,925599,344
Events in quadrant D3,757,541587,558

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136585
B01894312
C0166354
D0157047

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01382
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6679540.808504%
B66802914.356287%
C66811041.556653%
D6679711.063033%

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 7571 6681 0 0 0.00% 0.00%
B 7572 6682 5 5 0.07% 0.07%
C 7572 6682 0 0 0.00% 0.00%
D 7572 6682 32 32 0.42% 0.48%

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 13 254 9790 54.7 817 799 164.4
A 3 137 7271 39.37 817 799 164.4
A 0 226 7038 37.95 817 799 164.4
B 4 200 1654282 10639.03 812 794 155.4
B 0 219 23443 145.73 812 794 155.4
B 12 111 19028 117.32 812 794 155.4
C 7 247 670925 3668.25 784 789 182.7
C 2 16 172068 937.56 784 789 182.7
C 14 238 124431 676.8 784 789 182.7
D 12 218 462197 2424.35 789 768 190.3
D 1 52 159688 834.97 789 768 190.3
D 8 195 74388 386.8 789 768 190.3

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