ASTROSAT CZTI

Data Quality Report

Orbit 40737

Creation date: 2024-06-27T22:19:49.139859
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_066T01_9000005562_40737cztM0_level2.fits modeM0/AS1A12_066T01_9000005562_40737cztM0_level2_quad_clean.evt
Size (bytes)488,165,76076,766,400
Size465.6 MB 73.2 MB
Events in quadrant A2,790,620588,606
Events in quadrant B2,316,594607,645
Events in quadrant C9,652,877289,510
Events in quadrant D2,925,474492,501

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0113103
B0101222
C0320772
D0120072

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4935360.729483%
B4935100.202634%
C4935289558.662614%
D493551210.374873%

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 7058 4936 27 27 0.38% 0.55%
B 7058 4936 2 2 0.03% 0.04%
C 7058 4936 2769 2769 39.23% 56.10%
D 7058 4936 123 123 1.74% 2.49%

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 460910 3974.2 563 552 115.8
A 13 248 107953 927.18 563 552 115.8
A 12 189 32973 279.89 563 552 115.8
B 0 190 49029 446.22 563 546 108.7
B 0 229 22381 200.96 563 546 108.7
B 12 111 13340 117.75 563 546 108.7
C 9 187 7639574 76124.92 432 435 100.4
C 15 214 164230 1632.24 432 435 100.4
C 14 254 118689 1178.42 432 435 100.4
D 12 227 297795 2298.73 530 516 129.3
D 2 249 153706 1184.55 530 516 129.3
D 12 191 142170 1095.35 530 516 129.3

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