ASTROSAT CZTI

Data Quality Report

Orbit 51891

Creation date: 2025-05-02T15:13:47.262483
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/AS1C09_011T05_9000006466_51891cztM0_level2.fits modeM0/AS1C09_011T05_9000006466_51891cztM0_level2_quad_clean.evt
Size (bytes)946,503,36088,718,400
Size902.7 MB 84.6 MB
Events in quadrant A6,523,288655,672
Events in quadrant B7,680,145647,564
Events in quadrant C4,974,990643,285
Events in quadrant D15,294,359230,987

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244930
B0279100
C0198150
D0504720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73002643.616438%
B7300111815.315068%
C73012192.999589%
D7301488066.840159%

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 7300 7300 185 185 2.53% 2.53%
B 7300 7300 724 724 9.92% 9.92%
C 7301 7301 179 179 2.45% 2.45%
D 7300 7300 4120 4120 56.44% 56.44%

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 12 3 2026319 10905.19 748 730 185.7
A 4 175 276948 1487.08 748 730 185.7
A 12 194 235056 1261.54 748 730 185.7
B 4 170 3011596 19718.83 713 687 152.7
B 10 254 508083 3323.0 713 687 152.7
B 4 171 309557 2022.83 713 687 152.7
C 13 3 561398 2787.7 729 719 201.1
C 15 189 329234 1633.38 729 719 201.1
C 14 245 273253 1355.04 729 719 201.1
D 11 129 10526596 83491.44 447 431 126.1
D 12 17 752852 5968.05 447 431 126.1
D 6 42 488598 3872.04 447 431 126.1

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