ASTROSAT CZTI

Data Quality Report

Orbit 27603

Creation date: 2024-06-27T19:42:59.530020
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/AS1T03_257T01_9000003976_27603cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27603cztM0_level2_quad_clean.evt
Size (bytes)96,575,04026,038,080
Size92.1 MB 24.8 MB
Events in quadrant A668,266177,252
Events in quadrant B712,519187,998
Events in quadrant C689,415171,380
Events in quadrant D771,383162,025

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026920
B029110
C027860
D031350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A117960.508906%
B117920.169635%
C1179110.932994%
D117890.764007%

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 1179 1179 2 2 0.17% 0.17%
B 1179 1179 0 0 0.00% 0.00%
C 1179 1179 0 0 0.00% 0.00%
D 1178 1178 9 9 0.76% 0.76%

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 8 192 6748 186.22 170 168 35.3
A 13 254 2291 60.08 170 168 35.3
A 6 16 1501 37.72 170 168 35.3
B 0 230 14630 425.74 175 173 34.0
B 4 200 3770 105.93 175 173 34.0
B 12 111 3536 99.04 175 173 34.0
C 14 238 27316 661.39 167 168 41.0
C 9 15 5835 138.06 167 168 41.0
C 0 10 4434 103.93 167 168 41.0
D 1 52 107667 2664.79 162 158 40.3
D 2 250 32250 795.45 162 158 40.3
D 12 233 7087 171.75 162 158 40.3

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