ASTROSAT CZTI

Data Quality Report

Orbit 36870

Creation date: 2024-06-27T21:32:36.166596
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/AS1A11_075T01_9000005244_36870cztM0_level2.evt modeM0/AS1A11_075T01_9000005244_36870cztM0_level2_quad_clean.evt
Size (bytes)308,600,64066,755,520
Size294.3 MB 63.7 MB
Events in quadrant A2,442,261556,168
Events in quadrant B743,3368,024
Events in quadrant C2,744,705570,929
Events in quadrant D3,077,117540,935

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104823
B049742
C0111282
D0125642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4886180.368400%
B48864886100.000000%
C48861092.230864%
D48861573.213262%

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 4887 10 10 0.14% 0.20%
B 7038 4885 0 0 0.00% 0.00%
C 7039 4887 94 94 1.34% 1.92%
D 7039 4887 139 139 1.97% 2.84%

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 212558 1905.76 550 541 111.3
A 9 143 73595 656.66 550 541 111.3
A 13 6 14928 129.32 550 541 111.3
B 12 243 678743 198261.76 9 9 3.4
B 12 144 12293 3588.22 9 9 3.4
B 5 172 6102 1779.8 9 9 3.4
C 0 10 284000 2289.7 544 550 123.8
C 15 214 206305 1662.09 544 550 123.8
C 14 254 74093 594.08 544 550 123.8
D 13 249 352663 2510.14 531 521 140.3
D 12 17 180962 1286.22 531 521 140.3
D 12 227 157321 1117.7 531 521 140.3

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