ASTROSAT CZTI

Data Quality Report

Orbit 20935

Creation date: 2024-06-27T18:21:42.267765
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_227T03_9000003086_20935cztM0_level2.evt modeM0/AS1A05_227T03_9000003086_20935cztM0_level2_quad_clean.evt
Size (bytes)247,374,72051,154,560
Size235.9 MB 48.8 MB
Events in quadrant A1,689,145328,042
Events in quadrant B1,856,200331,265
Events in quadrant C1,738,382325,127
Events in quadrant D1,969,811317,670

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0720
B0720
C0720
D0720

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A071861
B075822
C072561
D079871

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3481461.321459%
B3480621.781609%
C3480631.810345%
D3480541.551724%

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 3781 3482 0 0 0.00% 0.00%
B 3780 3481 5 5 0.13% 0.14%
C 3780 3481 0 0 0.00% 0.00%
D 3780 3481 21 21 0.56% 0.60%

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 0 226 3863 38.18 438 427 90.0
A 3 137 3654 35.85 438 427 90.0
A 12 194 3198 30.79 438 427 90.0
B 7 220 43094 505.99 435 423 84.3
B 0 190 37477 439.39 435 423 84.3
B 0 229 36438 427.07 435 423 84.3
C 14 238 66307 657.29 424 427 100.2
C 7 247 16208 157.45 424 427 100.2
C 13 61 2985 25.52 424 427 100.2
D 9 1 171468 1640.56 430 417 104.3
D 1 20 79137 755.01 430 417 104.3
D 1 52 72185 688.33 430 417 104.3

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