ASTROSAT CZTI

Data Quality Report

Orbit 43341

Creation date: 2024-06-27T22:50:47.287285
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_158T01_9000005868_43341cztM0_level2.fits modeM0/AS1T05_158T01_9000005868_43341cztM0_level2_quad_clean.evt
Size (bytes)559,802,880170,098,560
Size533.9 MB 162.2 MB
Events in quadrant A5,682,7611,145,695
Events in quadrant B4,528,4561,179,907
Events in quadrant C4,829,0051,109,475
Events in quadrant D4,889,9811,010,050

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231262
B0206042
C0207032
D0222282

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0490
C0490
D0490

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02040
B02040
C02040
D02040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10195900.882786%
B10195110.107896%
C1019590.088279%
D101951371.343796%

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 13691 10197 56 56 0.41% 0.55%
B 13691 10197 1 1 0.01% 0.01%
C 13691 10197 2 2 0.01% 0.02%
D 13691 10197 118 118 0.86% 1.16%

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 972582 4230.48 1126 1103 229.6
A 15 237 336128 1458.93 1126 1103 229.6
A 3 137 12712 50.55 1126 1103 229.6
B 0 189 55278 248.75 1123 1090 217.8
B 12 111 28558 126.09 1123 1090 217.8
B 11 111 26268 115.58 1123 1090 217.8
C 15 214 420928 1611.34 1108 1116 260.5
C 3 233 56090 211.0 1108 1116 260.5
C 14 254 22129 80.65 1108 1116 260.5
D 13 249 308008 1142.4 1090 1058 268.7
D 2 249 258198 957.02 1090 1058 268.7
D 12 6 118106 435.63 1090 1058 268.7

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