ASTROSAT CZTI

Data Quality Report

Orbit 20123

Creation date: 2024-06-27T18:11:33.094277
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/AS1A05_180T01_9000002992_20123cztM0_level2.evt modeM0/AS1A05_180T01_9000002992_20123cztM0_level2_quad_clean.evt
Size (bytes)3,116,687,040459,420,480
Size2.9 GB 438.1 MB
Events in quadrant A24,552,5522,855,565
Events in quadrant B21,698,6343,099,074
Events in quadrant C18,110,2292,960,131
Events in quadrant D27,889,6142,813,298

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0670
B0670
C0670
D0670

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920226
B0843266
C0721176
D01041266

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06460
B06460
C06460
D06460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A31808390512.276786%
B3180915724.941998%
C3180810263.225604%
D31808331010.406187%

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 38358 31815 2251 2251 5.87% 7.08%
B 38359 31816 604 604 1.57% 1.90%
C 38358 31815 183 183 0.48% 0.58%
D 38358 31813 2142 2142 5.58% 6.73%

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 14 238 8260195 10222.55 4091 4031 807.6
A 14 237 221538 269.31 4091 4031 807.6
A 15 192 213868 259.81 4091 4031 807.6
B 10 245 4619177 5851.99 4231 4140 788.6
B 4 80 142117 174.96 4231 4140 788.6
B 4 251 134063 164.75 4231 4140 788.6
C 3 233 1533637 1643.07 4076 4121 930.9
C 14 238 649795 693.61 4076 4121 930.9
C 0 207 41380 40.02 4076 4121 930.9
D 1 52 9234645 9522.68 4037 3937 969.3
D 7 238 2442127 2515.31 4037 3937 969.3
D 11 176 365140 372.63 4037 3937 969.3

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