ASTROSAT CZTI

Data Quality Report

Orbit 16760

Creation date: 2024-06-27T17:27:16.524475
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_004T05_9000002488_16760cztM0_level2.evt modeM0/AS1A05_004T05_9000002488_16760cztM0_level2_quad_clean.evt
Size (bytes)267,125,76029,600,640
Size254.8 MB 28.2 MB
Events in quadrant A1,803,527191,167
Events in quadrant B1,336,562195,106
Events in quadrant C1,341,565187,865
Events in quadrant D3,456,964161,932

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068464
B055023
C055305
D01184438

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A220924811.226799%
B22091014.572205%
C22081054.755435%
D220561828.027211%

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 3481 2211 104 104 2.99% 4.70%
B 3481 2211 6 6 0.17% 0.27%
C 3481 2211 6 6 0.17% 0.27%
D 3481 2211 511 511 14.68% 23.11%

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 15 174 518444 7762.03 323 316 66.8
A 14 4 42626 633.84 323 316 66.8
A 0 226 2875 38.34 323 316 66.8
B 10 16 20924 327.58 322 315 62.9
B 15 35 19648 307.3 322 315 62.9
B 5 236 12911 200.21 322 315 62.9
C 0 207 50632 697.91 306 309 72.1
C 14 238 47037 648.05 306 309 72.1
C 3 233 41665 573.55 306 309 72.1
D 1 52 2048460 28625.85 291 283 71.5
D 11 176 114366 1594.45 291 283 71.5
D 13 232 99745 1390.11 291 283 71.5

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