ASTROSAT CZTI

Data Quality Report

Orbit 43939

Creation date: 2024-06-27T22:57:25.672007
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_024T02_9000005918_43939cztM0_level2.fits modeM0/AS1A13_024T02_9000005918_43939cztM0_level2_quad_clean.evt
Size (bytes)474,327,36094,406,400
Size452.4 MB 90.0 MB
Events in quadrant A6,052,538619,421
Events in quadrant B2,841,655677,950
Events in quadrant C3,025,482640,020
Events in quadrant D5,191,066518,269

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236071446
B012883374
C013749552
D0205751350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01191
B01212
C01221
D01221

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56984177.318357%
B58421021.745977%
C5810981.686747%
D567366411.704565%

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 7169 5971 233 233 3.25% 3.90%
B 7168 6011 23 23 0.32% 0.38%
C 7170 6003 70 70 0.98% 1.17%
D 7170 5969 671 671 9.36% 11.24%

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 2223289 17450.76 623 610 127.4
A 10 83 938436 7363.08 623 610 127.4
A 15 223 376018 2947.41 623 610 127.4
B 5 172 99977 813.53 640 623 122.1
B 0 200 75462 612.8 640 623 122.1
B 0 213 66359 538.26 640 623 122.1
C 14 254 281659 1964.94 615 617 143.0
C 1 241 268179 1870.69 615 617 143.0
C 15 157 44158 304.42 615 617 143.0
D 5 235 1383552 9453.52 581 561 146.3
D 13 249 802854 5484.12 581 561 146.3
D 1 52 364018 2484.43 581 561 146.3

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