ASTROSAT CZTI

Data Quality Report

Orbit 49799

Creation date: 2024-12-12T16:31:04.336470
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/AS1A13_037T01_9000006440_49799cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49799cztM0_level2_quad_clean.evt
Size (bytes)1,010,880,00053,847,360
Size964.1 MB 51.4 MB
Events in quadrant A7,959,597477,969
Events in quadrant B3,660,046644,224
Events in quadrant C9,942,10948,028
Events in quadrant D15,367,77419,259

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280463
B0153411
C0339081
D0499491

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6314141522.410516%
B63151913.024545%
C6315589593.349169%
D6315614697.323832%

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 6964 6314 1144 1144 16.43% 18.12%
B 6965 6316 81 81 1.16% 1.28%
C 6964 6314 2207 2207 31.69% 34.95%
D 6964 6314 5649 5649 81.12% 89.47%

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 98 1017744 6611.04 621 606 153.9
A 4 205 588056 3818.22 621 606 153.9
A 15 63 549788 3569.49 621 606 153.9
B 10 28 273346 1894.96 673 652 143.9
B 4 206 163109 1128.92 673 652 143.9
B 10 247 113820 786.41 673 652 143.9
C 15 147 3744445 65003.61 180 177 57.6
C 15 230 1120846 19455.75 180 177 57.6
C 15 197 1096494 19032.97 180 177 57.6
D 15 106 2082875 25450.71 253 242 81.8
D 8 176 2035048 24866.24 253 242 81.8
D 7 61 1790354 21875.97 253 242 81.8

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