ASTROSAT CZTI

Data Quality Report

Orbit 26645

Creation date: 2024-06-27T19:31:19.070579
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/AS1A09_145T01_9000003848_26645cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26645cztM0_level2_quad_clean.evt
Size (bytes)1,821,899,520325,428,480
Size1.7 GB 310.4 MB
Events in quadrant A11,193,0412,137,838
Events in quadrant B12,897,7702,139,711
Events in quadrant C11,256,6952,062,433
Events in quadrant D18,317,7181,974,221

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0473540
B0531860
C0472730
D0698060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A224211840.820659%
B224212050.914321%
C224203191.422837%
D2242021179.442462%

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 32180 22425 48 48 0.15% 0.21%
B 32180 22425 24 24 0.07% 0.11%
C 32179 22424 22 22 0.07% 0.10%
D 32179 22424 1549 1549 4.81% 6.91%

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 442869 791.34 2785 2740 556.2
A 13 254 36373 60.47 2785 2740 556.2
A 3 137 24991 40.01 2785 2740 556.2
B 0 189 1400260 2672.7 2763 2702 522.9
B 3 112 475722 904.61 2763 2702 522.9
B 10 245 84396 156.23 2763 2702 522.9
C 14 238 429714 685.44 2658 2685 623.0
C 3 233 185461 293.38 2658 2685 623.0
C 2 16 141722 223.17 2658 2685 623.0
D 1 52 4812407 7483.58 2587 2533 642.7
D 7 80 1759049 2732.93 2587 2533 642.7
D 12 233 1411643 2192.41 2587 2533 642.7

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