ASTROSAT CZTI

Data Quality Report

Orbit 35380

Creation date: 2024-06-27T21:12:45.298814
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_099T01_9000005068_35380cztM0_level2.evt modeM0/AS1A11_099T01_9000005068_35380cztM0_level2_quad_clean.evt
Size (bytes)886,415,04061,977,600
Size845.4 MB 59.1 MB
Events in quadrant A2,629,295509,213
Events in quadrant B7,341,969339,765
Events in quadrant C4,258,558489,128
Events in quadrant D12,272,773178,648

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107693
B0251112
C0157912
D0399032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5094120.235571%
B5094212741.755006%
C50943436.733412%
D5094432684.923439%

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 7098 5095 2 2 0.03% 0.04%
B 7098 5095 1944 1944 27.39% 38.16%
C 7098 5095 279 279 3.93% 5.48%
D 7098 5095 4076 4076 57.42% 80.00%

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 122837 951.09 630 618 128.5
A 14 254 33640 256.97 630 618 128.5
A 13 6 15242 113.8 630 618 128.5
B 4 251 1746413 18872.2 481 470 92.5
B 5 31 1085501 11728.29 481 470 92.5
B 5 15 1055776 11406.99 481 470 92.5
C 10 49 1302536 9541.38 588 593 136.5
C 0 10 398511 2916.17 588 593 136.5
C 15 214 212707 1554.49 588 593 136.5
D 7 80 8392553 109426.64 302 293 76.7
D 12 235 1794909 23399.99 302 293 76.7
D 10 118 269506 3510.27 302 293 76.7

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