ASTROSAT CZTI

Data Quality Report

Orbit 19491

Creation date: 2024-06-27T18:03:23.973452
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_229T02_9000002890_19491cztM0_level2.evt modeM0/AS1A05_229T02_9000002890_19491cztM0_level2_quad_clean.evt
Size (bytes)256,841,28058,296,960
Size244.9 MB 55.6 MB
Events in quadrant A1,571,653387,516
Events in quadrant B1,611,069390,740
Events in quadrant C1,723,732377,931
Events in quadrant D2,635,411363,837

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A071371
B072071
C073581
D0101611

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3455290.839363%
B3456521.504630%
C3456521.504630%
D3456591.707176%

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 3455 3455 4 4 0.12% 0.12%
B 3456 3456 2 2 0.06% 0.06%
C 3456 3456 1 1 0.03% 0.03%
D 3456 3456 44 44 1.27% 1.27%

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 10 253 44014 541.14 393 385 80.6
A 11 29 8082 95.47 393 385 80.6
A 13 254 3562 39.41 393 385 80.6
B 0 197 21668 277.31 396 386 76.7
B 3 112 10463 131.31 396 386 76.7
B 12 111 9241 115.38 396 386 76.7
C 9 221 123809 1348.05 382 384 91.6
C 14 238 60056 651.74 382 384 91.6
C 3 233 47757 517.41 382 384 91.6
D 7 223 830720 8774.59 381 371 94.6
D 7 238 195967 2066.93 381 371 94.6
D 1 52 105037 1106.04 381 371 94.6

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