ASTROSAT CZTI

Data Quality Report

Orbit 14395

Creation date: 2024-06-27T16:54:32.965598
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/AS1G08_066T04_9000002122_14395cztM0_level2.evt modeM0/AS1G08_066T04_9000002122_14395cztM0_level2_quad_clean.evt
Size (bytes)943,263,360169,994,880
Size899.6 MB 162.1 MB
Events in quadrant A7,140,4211,094,725
Events in quadrant B6,534,7161,097,515
Events in quadrant C7,381,9821,043,911
Events in quadrant D6,657,4911,041,248

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02580
B02580
C02580
D02580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0293153
B0276422
C0300762
D0283272

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A126021481.174417%
B126022181.729884%
C12602900.714172%
D126021341.063323%

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 13878 12603 22 22 0.16% 0.17%
B 13878 12603 69 69 0.50% 0.55%
C 13878 12603 5 5 0.04% 0.04%
D 13878 12604 74 74 0.53% 0.59%

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 8 15 1335820 4441.18 1480 1442 300.5
A 15 69 58905 191.25 1480 1442 300.5
A 12 189 26673 83.98 1480 1442 300.5
B 0 229 305546 1085.05 1478 1439 280.3
B 4 142 144804 511.53 1478 1439 280.3
B 0 189 99277 349.09 1478 1439 280.3
C 3 233 1768276 5361.0 1429 1434 329.6
C 14 234 29064 83.84 1429 1434 329.6
C 13 61 10361 27.09 1429 1434 329.6
D 2 120 431807 1147.89 1424 1391 375.0
D 10 199 316418 840.16 1424 1391 375.0
D 1 52 166524 440.4 1424 1391 375.0

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