ASTROSAT CZTI

Data Quality Report

Orbit 40168

Creation date: 2024-06-27T22:13:22.559498
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/AS1A12_068T01_9000005526_40168cztM0_level2.fits modeM0/AS1A12_068T01_9000005526_40168cztM0_level2_quad_clean.evt
Size (bytes)364,337,28093,309,120
Size347.5 MB 89.0 MB
Events in quadrant A3,056,750623,766
Events in quadrant B3,112,605638,273
Events in quadrant C3,931,287615,958
Events in quadrant D2,963,651567,574

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125503
B0129172
C0153832
D0126382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5427380.700203%
B54271462.690252%
C5427961.768933%
D5427791.455685%

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 8862 5429 23 23 0.26% 0.42%
B 8862 5427 85 85 0.96% 1.57%
C 8862 5427 95 95 1.07% 1.75%
D 8862 5427 60 60 0.68% 1.11%

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 499382 3970.97 616 603 125.6
A 13 248 76864 607.14 616 603 125.6
A 7 3 48881 384.36 616 603 125.6
B 5 255 505370 4211.7 614 598 119.8
B 4 171 88111 730.19 614 598 119.8
B 0 190 34851 285.8 614 598 119.8
C 9 187 1003922 7118.11 607 612 141.0
C 15 214 226649 1603.65 607 612 141.0
C 10 20 210586 1489.69 607 612 141.0
D 12 227 169549 1137.92 606 590 148.5
D 13 249 143452 962.16 606 590 148.5
D 1 47 125822 843.42 606 590 148.5

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