ASTROSAT CZTI

Data Quality Report

Orbit 13879

Creation date: 2024-06-27T16:47:31.966406
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/AS1G08_030T01_9000002044_13879cztM0_level2.evt modeM0/AS1G08_030T01_9000002044_13879cztM0_level2_quad_clean.evt
Size (bytes)193,302,72028,082,880
Size184.3 MB 26.8 MB
Events in quadrant A1,267,993169,797
Events in quadrant B1,341,006166,915
Events in quadrant C1,299,277174,397
Events in quadrant D1,780,883165,916

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A053231
B055011
C053411
D070801

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A240080.333333%
B2400120.500000%
C240080.333333%
D2400361.500000%

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 2401 2401 0 0 0.00% 0.00%
B 2401 2401 0 0 0.00% 0.00%
C 2401 2401 0 0 0.00% 0.00%
D 2401 2401 16 16 0.67% 0.67%

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 1 162 4025 54.86 327 321 67.5
A 0 226 3164 42.11 327 321 67.5
A 12 194 2576 33.4 327 321 67.5
B 3 209 23210 366.9 326 320 62.4
B 10 244 13147 205.6 326 320 62.4
B 0 197 8294 127.81 326 320 62.4
C 3 233 22774 293.8 327 328 76.4
C 13 61 2387 26.95 327 328 76.4
C 12 4 1335 13.18 327 328 76.4
D 13 122 201990 2352.37 323 316 85.7
D 10 157 123159 1432.87 323 316 85.7
D 8 195 94579 1099.51 323 316 85.7

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