ASTROSAT CZTI

Data Quality Report

Orbit 38882

Creation date: 2024-06-27T21:57:38.086771
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_011T42_9000005412_38882cztM0_level2.fits modeM0/AS1A12_011T42_9000005412_38882cztM0_level2_quad_clean.evt
Size (bytes)366,336,00093,608,640
Size349.4 MB 89.3 MB
Events in quadrant A3,099,506653,689
Events in quadrant B2,638,935676,348
Events in quadrant C2,612,807648,841
Events in quadrant D4,824,146509,245

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123103
B0108472
C0107082
D0175812

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4946971.961181%
B4946561.132228%
C494670.141529%
D494679616.093813%

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 7039 4947 74 74 1.05% 1.50%
B 7039 4947 29 29 0.41% 0.59%
C 7039 4947 5 5 0.07% 0.10%
D 7038 4946 779 779 11.07% 15.75%

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 394131 3207.51 611 602 122.7
A 13 248 228842 1860.3 611 602 122.7
A 15 174 67093 541.94 611 602 122.7
B 4 171 145172 1230.78 615 601 117.5
B 5 184 60141 506.89 615 601 117.5
B 12 111 14113 115.03 615 601 117.5
C 15 214 205189 1460.31 604 609 140.1
C 14 254 21063 146.0 604 609 140.1
C 0 10 14996 102.7 604 609 140.1
D 12 227 1671086 12232.74 555 541 136.6
D 5 222 433224 3168.37 555 541 136.6
D 2 249 137411 1002.24 555 541 136.6

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