ASTROSAT CZTI

Data Quality Report

Orbit 18541

Creation date: 2024-06-27T17:51:11.163396
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_082T12_9000002754_18541cztM0_level2.evt modeM0/AS1A05_082T12_9000002754_18541cztM0_level2_quad_clean.evt
Size (bytes)286,056,00042,085,440
Size272.8 MB 40.1 MB
Events in quadrant A2,314,958262,041
Events in quadrant B1,684,774281,585
Events in quadrant C1,552,718272,095
Events in quadrant D2,919,599258,413

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A087261
B068221
C063691
D0105621

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A279031511.290323%
B2790873.118280%
C2790682.437276%
D279043615.627240%

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 4145 2790 161 161 3.88% 5.77%
B 4145 2790 10 10 0.24% 0.36%
C 4145 2791 0 0 0.00% 0.00%
D 4145 2790 287 287 6.92% 10.29%

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 814107 10403.35 379 371 78.2
A 13 210 30180 381.1 379 371 78.2
A 15 174 9228 113.23 379 371 78.2
B 3 64 96875 1271.35 394 386 75.9
B 4 80 20308 262.49 394 386 75.9
B 0 197 12497 159.58 394 386 75.9
C 14 238 59889 661.45 382 386 90.0
C 13 61 2693 25.65 382 386 90.0
C 14 111 983 6.64 382 386 90.0
D 7 238 1172146 12794.64 372 363 91.6
D 13 153 178992 1950.44 372 363 91.6
D 1 52 133480 1453.5 372 363 91.6

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