ASTROSAT CZTI

Data Quality Report

Orbit 18729

Creation date: 2024-06-27T17:54:00.120743
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_072T04_9000002802_18729cztM0_level2.evt modeM0/AS1A05_072T04_9000002802_18729cztM0_level2_quad_clean.evt
Size (bytes)194,929,92025,948,800
Size185.9 MB 24.7 MB
Events in quadrant A2,008,537154,438
Events in quadrant B1,280,824163,899
Events in quadrant C1,232,595157,741
Events in quadrant D1,235,842155,759

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A073771
B052331
C050191
D049971

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A21091949.198672%
B2109904.267425%
C2109924.362257%
D2109643.034614%

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 3369 2110 53 53 1.57% 2.51%
B 3369 2110 1 1 0.03% 0.05%
C 3369 2110 0 0 0.00% 0.00%
D 3369 2110 6 6 0.18% 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 14 4 794908 12511.18 313 307 63.5
A 14 111 3945 57.28 313 307 63.5
A 13 254 3412 48.89 313 307 63.5
B 10 245 41344 688.59 309 303 59.6
B 7 220 13387 219.52 309 303 59.6
B 12 111 6620 105.99 309 303 59.6
C 14 238 47374 675.59 297 298 69.7
C 0 207 24897 353.02 297 298 69.7
C 13 61 2042 25.03 297 298 69.7
D 14 34 47471 635.68 305 297 74.2
D 10 70 18620 246.91 305 297 74.2
D 2 234 8532 110.97 305 297 74.2

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