ASTROSAT CZTI

Data Quality Report

Orbit 00601

Creation date: 2024-06-27T14:00:24.372637
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/AS1P01_126T01_9000000084_00601cztM0_level2.evt modeM0/AS1P01_126T01_9000000084_00601cztM0_level2_quad_clean.evt
Size (bytes)732,424,32057,816,000
Size698.5 MB 55.1 MB
Events in quadrant A7,661,556351,038
Events in quadrant B4,826,488378,173
Events in quadrant C4,754,160370,529
Events in quadrant D4,667,133361,815

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257291
B0172431
C0169881
D0167861

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0840
B0840
C0840
D0840

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A409470317.171470%
B4094170.415242%
C409430.073278%
D4094491.196873%

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 4094 4094 1555 1555 37.98% 37.98%
B 4094 4094 83 83 2.03% 2.03%
C 4094 4094 125 125 3.05% 3.05%
D 4094 4094 208 208 5.08% 5.08%

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 15 200 3141709 12318.31 1143 1133 255.0
A 13 160 55274 212.36 1143 1133 255.0
A 0 238 19040 70.24 1143 1133 255.0
B 7 221 139492 486.6 1197 1203 284.2
B 5 191 44749 153.23 1197 1203 284.2
B 4 250 28245 95.15 1197 1203 284.2
C 9 83 473071 1560.78 1082 1122 302.4
C 7 173 20895 65.39 1082 1122 302.4
C 15 241 12627 38.05 1082 1122 302.4
D 12 237 394136 1215.24 1014 1054 323.5
D 1 4 138680 425.48 1014 1054 323.5
D 13 221 101401 310.23 1014 1054 323.5

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