ASTROSAT CZTI

Data Quality Report

Orbit 22126

Creation date: 2024-06-27T18:37:09.514056
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/AS1T03_145T01_9000003278_22126cztM0_level2.evt modeM0/AS1T03_145T01_9000003278_22126cztM0_level2_quad_clean.evt
Size (bytes)173,954,88039,173,760
Size165.9 MB 37.4 MB
Events in quadrant A1,168,026258,429
Events in quadrant B1,294,105263,009
Events in quadrant C1,180,765250,466
Events in quadrant D1,459,137240,487

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A049371
B053051
C049451
D059001

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2419150.620091%
B2419180.744109%
C2419190.785449%
D24181174.838710%

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 3339 2420 0 0 0.00% 0.00%
B 3339 2420 3 3 0.09% 0.12%
C 3339 2420 0 0 0.00% 0.00%
D 3338 2419 96 96 2.88% 3.97%

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 13 254 4337 63.92 302 296 63.2
A 3 137 2630 36.92 302 296 63.2
A 0 226 2539 35.48 302 296 63.2
B 3 64 37886 627.74 304 296 59.9
B 0 230 24465 403.61 304 296 59.9
B 0 197 23661 390.18 304 296 59.9
C 14 238 46178 655.15 290 293 70.0
C 0 10 2702 34.4 290 293 70.0
C 13 61 2085 25.59 290 293 70.0
D 1 52 245517 3482.15 283 276 70.4
D 11 176 62203 879.29 283 276 70.4
D 13 172 32978 464.33 283 276 70.4

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