ASTROSAT CZTI

Data Quality Report

Orbit 34495

Creation date: 2022-02-13T21:17:08.152514
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/AS1A05_118T04_9000004926_34495cztM0_level2.evt modeM0/AS1A05_118T04_9000004926_34495cztM0_level2_quad_clean.evt
Size (bytes)1,678,619,520218,756,160
Size1.6 GB 208.6 MB
Events in quadrant A11,693,6301,307,800
Events in quadrant B11,592,6631,349,155
Events in quadrant C10,389,3341,334,210
Events in quadrant D15,798,5311,240,729

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0610
B0610
C0610
D0610

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04120
B04120
C04120
D04120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0477425
B0472764
C0429914
D0608014

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A202306303.114187%
B202305002.471577%
C20230570.281760%
D202305682.807711%

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 26321 20234 397 397 1.51% 1.96%
B 26321 20234 322 322 1.22% 1.59%
C 26321 20234 37 37 0.14% 0.18%
D 26321 20234 485 485 1.84% 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 15 169 2438027 5186.56 2354 2308 469.6
A 10 83 87658 181.74 2354 2308 469.6
A 4 48 37857 75.7 2354 2308 469.6
B 5 172 1484008 3320.16 2339 2272 446.3
B 0 189 514626 1148.04 2339 2272 446.3
B 0 229 253758 563.51 2339 2272 446.3
C 15 214 840386 1592.82 2298 2311 526.2
C 14 67 227399 427.79 2298 2311 526.2
C 0 10 200953 377.53 2298 2311 526.2
D 8 195 4498321 7993.67 2295 2233 562.5
D 14 52 493539 873.5 2295 2233 562.5
D 2 249 393305 695.29 2295 2233 562.5

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