ASTROSAT CZTI

Data Quality Report

Orbit 39078

Creation date: 2024-06-27T22:00:08.417688
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_067T01_9000005432_39078cztM0_level2.fits modeM0/AS1T05_067T01_9000005432_39078cztM0_level2_quad_clean.evt
Size (bytes)806,855,040184,181,760
Size769.5 MB 175.6 MB
Events in quadrant A6,412,8011,244,725
Events in quadrant B5,294,5931,281,789
Events in quadrant C8,313,9541,163,362
Events in quadrant D8,969,2261,102,917

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259104
B0232783
C0320663
D0341533

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02320
B02320
C02320
D02320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11328740.653249%
B11328330.291314%
C113284814.246116%
D113283793.345692%

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 15477 11331 47 47 0.30% 0.41%
B 15477 11331 12 12 0.08% 0.11%
C 15477 11331 404 404 2.61% 3.57%
D 15477 11331 395 395 2.55% 3.49%

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 774251 3009.94 1270 1244 256.8
A 15 222 602660 2341.8 1270 1244 256.8
A 13 248 69610 266.2 1270 1244 256.8
B 5 184 169512 686.59 1266 1232 245.1
B 5 172 48454 192.67 1266 1232 245.1
B 0 213 46672 185.4 1266 1232 245.1
C 15 208 2891645 10185.88 1215 1220 283.8
C 15 214 467716 1643.94 1215 1220 283.8
C 3 233 190980 668.72 1215 1220 283.8
D 12 235 3184312 10719.04 1223 1189 297.0
D 12 227 380728 1278.08 1223 1189 297.0
D 13 249 285101 956.06 1223 1189 297.0

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