ASTROSAT CZTI

Data Quality Report

Orbit 20220727_A11_087T05_9000005248_level2

Creation date: 2022-07-29T16:54:08.331019
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_087T05_9000005248cztM0_level2_bc.evt modeM0/AS1A11_087T05_9000005248cztM0_level2_quad_clean.evt
Size (bytes)1,716,511,680497,465,280
Size1.6 GB 474.4 MB
Events in quadrant A9,916,1513,041,301
Events in quadrant B11,282,1813,092,652
Events in quadrant C11,663,4403,054,075
Events in quadrant D16,139,5682,874,985

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0900410
B0970030
C0934480
D01164100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08940
B08940
C08940
D08940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01450
B01450
C01450
D01450

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A43760940.214808%
B437604381.000914%
C437603200.731261%
D4376024985.708410%

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 58307 43769 11 11 0.02% 0.03%
B 58307 43762 26 26 0.04% 0.06%
C 58307 43760 80 80 0.14% 0.18%
D 58307 43758 522 522 0.90% 1.19%

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 1390679 2910.46 2140 2098 477.1
A 15 174 141998 293.23 2140 2098 477.1
A 13 254 56973 115.02 2140 2098 477.1
B 0 182 710449 1639.3 2163 2112 432.1
B 5 172 591487 1363.99 2163 2112 432.1
B 0 229 571020 1316.62 2163 2112 432.1
C 15 214 1761367 3626.95 2114 2096 485.1
C 0 10 1173142 2414.25 2114 2096 485.1
C 15 159 188167 383.61 2114 2096 485.1
D 12 17 2287561 4577.68 2082 2017 499.3
D 12 233 1958777 3919.17 2082 2017 499.3
D 10 253 1517171 3034.68 2082 2017 499.3

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