ASTROSAT CZTI

Data Quality Report

Orbit 26639

Creation date: 2024-06-27T19:31:17.486319
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/AS1A09_145T01_9000003848_26639cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26639cztM0_level2_quad_clean.evt
Size (bytes)118,100,16017,936,640
Size112.6 MB 17.1 MB
Events in quadrant A784,029107,953
Events in quadrant B849,65095,414
Events in quadrant C821,592111,590
Events in quadrant D998,09398,200

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A031530
B035360
C033030
D038400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022
B055
C044
D022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A152760.392927%
B139780.572656%
C1568140.892857%
D1368594.312865%

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 7781 1985 0 0 0.00% 0.00%
B 7608 1839 0 0 0.00% 0.00%
C 7780 2051 0 0 0.00% 0.00%
D 7784 1781 30 30 0.39% 1.68%

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 13 9556 218.74 200 196 42.8
A 13 254 2549 54.99 200 196 42.8
A 3 137 1894 39.68 200 196 42.8
B 0 189 101773 2816.76 179 176 36.1
B 3 112 36839 1016.48 179 176 36.1
B 10 245 5271 141.26 179 176 36.1
C 14 238 30782 647.44 193 194 47.2
C 3 233 17476 365.8 193 194 47.2
C 2 16 5574 113.88 193 194 47.2
D 7 80 245028 5668.74 171 166 43.2
D 1 52 60018 1385.62 171 166 43.2
D 15 0 11534 263.18 171 166 43.2

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