ASTROSAT CZTI

Data Quality Report

Orbit 04585

Creation date: 2024-06-27T14:44:05.281224
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/AS1G05_233T10_9000000570_04585cztM0_level2.evt modeM0/AS1G05_233T10_9000000570_04585cztM0_level2_quad_clean.evt
Size (bytes)436,178,88083,050,560
Size416.0 MB 79.2 MB
Events in quadrant A3,144,342520,645
Events in quadrant B3,540,656521,312
Events in quadrant C2,938,209519,840
Events in quadrant D3,147,513502,752

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140553
B0151252
C0132782
D0140192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6460921.424149%
B6460610.944272%
C6460160.247678%
D6460420.650155%

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 7620 6461 42 42 0.55% 0.65%
B 7620 6461 17 17 0.22% 0.26%
C 7620 6461 3 3 0.04% 0.05%
D 7620 6461 18 18 0.24% 0.28%

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 0 118 279996 1849.7 731 715 151.0
A 0 226 33282 215.69 731 715 151.0
A 8 15 9002 54.89 731 715 151.0
B 15 204 337600 2394.19 744 728 140.7
B 14 167 153307 1084.4 744 728 140.7
B 10 16 60961 428.08 744 728 140.7
C 9 247 47198 275.46 722 726 168.7
C 8 208 27168 156.73 722 726 168.7
C 8 128 12414 69.28 722 726 168.7
D 13 235 134362 772.71 716 697 173.0
D 2 136 117844 677.22 716 697 173.0
D 1 7 42268 240.32 716 697 173.0

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