ASTROSAT CZTI

Data Quality Report

Orbit 36895

Creation date: 2024-06-27T21:32:56.400891
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/AS1C07_010T01_9000005246_36895cztM0_level2.evt modeM0/AS1C07_010T01_9000005246_36895cztM0_level2_quad_clean.evt
Size (bytes)327,565,44062,700,480
Size312.4 MB 59.8 MB
Events in quadrant A2,715,187520,680
Events in quadrant B826,3848,694
Events in quadrant C2,706,547509,860
Events in quadrant D3,303,902484,321

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115023
B054622
C0112262
D0133472

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5326180.337965%
B53265326100.000000%
C5326150.281637%
D53261663.116786%

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 7088 5327 8 8 0.11% 0.15%
B 7087 5325 2 2 0.03% 0.04%
C 7088 5327 7 7 0.10% 0.13%
D 7088 5327 135 135 1.90% 2.53%

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 231462 1833.2 624 612 125.9
A 9 143 31677 246.69 624 612 125.9
A 13 6 15678 119.64 624 612 125.9
B 12 243 737063 177392.82 11 11 4.2
B 5 255 18976 4564.47 11 11 4.2
B 12 144 13566 3262.4 11 11 4.2
C 15 214 228315 1595.32 610 614 142.7
C 0 10 82559 574.12 610 614 142.7
C 15 159 18596 125.99 610 614 142.7
D 13 249 448747 3041.26 601 585 147.4
D 13 171 185742 1256.49 601 585 147.4
D 2 153 85881 578.82 601 585 147.4

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