ASTROSAT CZTI

Data Quality Report

Orbit 23361

Creation date: 2024-06-27T18:53:18.818912
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/AS1A07_135T01_9000003452_23361cztM0_level2.evt modeM0/AS1A07_135T01_9000003452_23361cztM0_level2_quad_clean.evt
Size (bytes)863,297,280115,289,280
Size823.3 MB 109.9 MB
Events in quadrant A5,721,006700,350
Events in quadrant B5,987,739705,385
Events in quadrant C7,085,267675,341
Events in quadrant D6,627,349668,647

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0234732
B0242042
C0284242
D0264752

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A107021091.018501%
B107031421.326731%
C107032932.737550%
D107031891.765860%

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 13257 10702 0 0 0.00% 0.00%
B 13258 10703 22 22 0.17% 0.21%
C 13258 10704 51 51 0.38% 0.48%
D 13258 10703 96 96 0.72% 0.90%

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 15564 48.26 1482 1457 292.3
A 0 226 12956 39.34 1482 1457 292.3
A 3 137 12041 36.21 1482 1457 292.3
B 0 189 163936 596.87 1459 1428 272.3
B 0 190 45075 160.31 1459 1428 272.3
B 12 111 32129 112.76 1459 1428 272.3
C 0 239 984447 3016.14 1424 1439 325.9
C 14 238 229747 700.51 1424 1439 325.9
C 10 9 198678 605.18 1424 1439 325.9
D 1 52 372617 1068.66 1453 1417 347.4
D 9 85 217413 621.84 1453 1417 347.4
D 13 104 187608 536.03 1453 1417 347.4

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