ASTROSAT CZTI

Data Quality Report

Orbit 08004

Creation date: 2024-06-27T15:26:32.571990
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/AS1A02_165T03_9000001098_08004cztM0_level2.evt modeM0/AS1A02_165T03_9000001098_08004cztM0_level2_quad_clean.evt
Size (bytes)420,880,32084,139,200
Size401.4 MB 80.2 MB
Events in quadrant A2,825,191526,792
Events in quadrant B3,002,593547,300
Events in quadrant C2,872,839550,087
Events in quadrant D3,647,392514,061

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123232
B0127702
C0124272
D0149142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5859570.972862%
B58591001.706776%
C5859641.092337%
D58591151.962792%

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 8555 5861 0 0 0.00% 0.00%
B 8555 5861 4 4 0.05% 0.07%
C 8555 5861 0 0 0.00% 0.00%
D 8555 5861 44 44 0.51% 0.75%

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 0 226 6889 41.95 730 714 147.2
A 12 194 6411 38.7 730 714 147.2
A 4 2 5305 31.19 730 714 147.2
B 4 239 44826 317.79 741 725 138.8
B 5 255 25534 178.77 741 725 138.8
B 4 173 20640 143.51 741 725 138.8
C 1 16 16978 96.95 730 733 167.6
C 13 61 5539 28.68 730 733 167.6
C 9 236 3125 14.28 730 733 167.6
D 11 144 408391 2303.92 716 699 177.0
D 1 52 283971 1600.8 716 699 177.0
D 2 14 139066 781.93 716 699 177.0

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