ASTROSAT CZTI

Data Quality Report

Orbit 39276

Creation date: 2024-06-27T22:02:36.843270
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_037T01_9000005456_39276cztM0_level2.fits modeM0/AS1A12_037T01_9000005456_39276cztM0_level2_quad_clean.evt
Size (bytes)517,158,72081,696,960
Size493.2 MB 77.9 MB
Events in quadrant A4,289,625566,651
Events in quadrant B2,705,452605,227
Events in quadrant C2,531,300579,260
Events in quadrant D9,211,841357,012

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160113
B0113342
C0105272
D0309852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52183737.148333%
B5218541.034879%
C521840.076658%
D5218212840.781909%

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 7009 5219 310 310 4.42% 5.94%
B 7009 5219 39 39 0.56% 0.75%
C 7009 5219 0 0 0.00% 0.00%
D 7009 5218 2038 2038 29.08% 39.06%

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 15 222 1609447 13533.94 584 572 118.9
A 10 83 413610 3474.5 584 572 118.9
A 13 254 8241 64.51 584 572 118.9
B 5 172 241321 2096.27 589 574 114.8
B 0 189 59164 510.16 589 574 114.8
B 0 190 41392 355.42 589 574 114.8
C 15 214 239183 1744.47 582 584 136.8
C 0 10 7883 53.37 582 584 136.8
C 9 187 5469 35.72 582 584 136.8
D 12 235 5666139 44378.36 512 496 127.7
D 12 227 1237021 9685.57 512 496 127.7
D 1 47 116445 908.22 512 496 127.7

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