ASTROSAT CZTI

Data Quality Report

Orbit 26488

Creation date: 2024-06-27T19:29:40.044513
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_038T06_9000003832_26488cztM0_level2.evt modeM0/AS1A09_038T06_9000003832_26488cztM0_level2_quad_clean.evt
Size (bytes)190,100,16035,645,760
Size181.3 MB 34.0 MB
Events in quadrant A867,545265,985
Events in quadrant B879,677273,099
Events in quadrant C923,877252,858
Events in quadrant D2,987,834181,549

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035610
B036010
C037440
D098450

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A141370.495400%
B1413110.778485%
C1413312.193914%
D141399370.276008%

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 1413 1413 1 1 0.07% 0.07%
B 1413 1413 0 0 0.00% 0.00%
C 1413 1413 2 2 0.14% 0.14%
D 1413 1413 887 887 62.77% 62.77%

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 7 16 2882 59.18 224 221 45.0
A 13 254 2197 43.95 224 221 45.0
A 0 226 2093 41.63 224 221 45.0
B 0 190 7603 174.93 221 217 42.2
B 3 112 4900 110.91 221 217 42.2
B 12 111 4050 90.78 221 217 42.2
C 3 233 60793 1277.59 204 206 47.4
C 14 238 33830 709.02 204 206 47.4
C 4 254 21561 450.31 204 206 47.4
D 1 52 1797794 44616.44 164 160 40.3
D 7 80 537394 13333.9 164 160 40.3
D 12 233 24169 595.89 164 160 40.3

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