ASTROSAT CZTI

Data Quality Report

Orbit 20190429_A05_227T03_9000002872_level2

Creation date: 2025-11-29T21:28:39.449160
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_227T03_9000002872cztM0_level2.fits modeM0/AS1A05_227T03_9000002872cztM0_level2_quad_clean.evt
Size (bytes)40,334,40018,794,880
Size38.5 MB 17.9 MB
Events in quadrant A266,30884,100
Events in quadrant B253,73684,206
Events in quadrant C256,19478,711
Events in quadrant D125,1142,463

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A093920
B097760
C093480
D0340950

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4523571.260226%
B45231102.432014%
C45231042.299359%
D4523404589.431793%

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 4633 4523 0 0 0.00% 0.00%
B 4633 4522 0 0 0.00% 0.00%
C 4633 4523 0 0 0.00% 0.00%
D 4633 4486 0 0 0.00% 0.00%

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 29 279 11.5 69 65 18.6
A 0 30 221 8.38 69 65 18.6
A 9 19 208 7.68 69 65 18.6
B 2 9 213 9.62 67 64 15.5
B 3 17 189 8.07 67 64 15.5
B 5 128 182 7.62 67 64 15.5
C 2 191 188 6.62 67 63 18.9
C 3 158 183 6.36 67 63 18.9
C 9 233 179 6.15 67 63 18.9
D 7 5 106 6.67 35 32 11.1
D 4 246 101 6.22 35 32 11.1
D 15 46 98 5.95 35 32 11.1

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