ASTROSAT CZTI

Data Quality Report

Orbit 49734

Creation date: 2024-12-10T09:37:10.173510
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/AS1T05_233T01_9000006438_49734cztM0_level2.fits modeM0/AS1T05_233T01_9000006438_49734cztM0_level2_quad_clean.evt
Size (bytes)1,232,740,80040,155,840
Size1.1 GB 38.3 MB
Events in quadrant A13,748,507227,194
Events in quadrant B6,909,622548,511
Events in quadrant C9,033,0832,880
Events in quadrant D15,466,0807,281

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450231
B0248613
C0311591
D0501491

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6153422668.681944%
B615298816.059818%
C6152613299.674902%
D6152609098.992198%

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 7123 6153 4628 4628 64.97% 75.22%
B 7122 6153 711 711 9.98% 11.56%
C 7121 6151 811 811 11.39% 13.18%
D 7122 6152 5541 5541 77.80% 90.07%

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 8058989 57337.84 531 516 140.5
A 12 50 842627 5991.8 531 516 140.5
A 15 63 509500 3621.53 531 516 140.5
B 10 128 3724256 28177.72 629 609 132.1
B 4 206 130047 979.49 629 609 132.1
B 5 185 106046 797.87 629 609 132.1
C 15 180 3509278 149057.69 52 50 23.5
C 15 190 1284051 54539.12 52 50 23.5
C 15 181 744751 31631.86 52 50 23.5
D 15 40 3433418 46681.88 215 205 73.5
D 7 61 1944441 26436.05 215 205 73.5
D 15 168 1574350 21403.87 215 205 73.5

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