ASTROSAT CZTI

Data Quality Report

Orbit 40816

Creation date: 2024-06-27T22:20:52.912152
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_099T03_9000005570_40816cztM0_level2.fits modeM0/AS1A12_099T03_9000005570_40816cztM0_level2_quad_clean.evt
Size (bytes)651,081,600175,049,280
Size620.9 MB 166.9 MB
Events in quadrant A6,104,4551,172,041
Events in quadrant B5,035,2681,197,666
Events in quadrant C5,103,4341,147,755
Events in quadrant D7,017,3881,032,603

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245294
B0224013
C0220953
D0285723

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10833310.286163%
B10833470.433860%
C10833260.240007%
D108334103.784732%

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 13610 10835 13 13 0.10% 0.12%
B 13610 10835 17 17 0.12% 0.16%
C 13610 10835 17 17 0.12% 0.16%
D 13610 10835 415 415 3.05% 3.83%

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 978065 3991.43 1195 1171 244.7
A 15 191 112711 455.73 1195 1171 244.7
A 2 79 108411 438.16 1195 1171 244.7
B 0 190 288596 1244.71 1187 1153 230.9
B 0 230 53317 225.88 1187 1153 230.9
B 12 111 29384 122.25 1187 1153 230.9
C 15 214 461008 1704.96 1159 1166 269.7
C 0 10 46916 169.63 1159 1166 269.7
C 0 207 38237 137.45 1159 1166 269.7
D 1 47 844702 2993.49 1149 1116 281.8
D 2 249 697355 2470.62 1149 1116 281.8
D 12 79 334158 1181.81 1149 1116 281.8

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