ASTROSAT CZTI

Data Quality Report

Orbit 24152

Creation date: 2024-06-27T19:02:50.123578
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_047T06_9000003576_24152cztM0_level2.evt modeM0/AS1A07_047T06_9000003576_24152cztM0_level2_quad_clean.evt
Size (bytes)757,048,320209,698,560
Size722.0 MB 200.0 MB
Events in quadrant A5,152,2141,437,862
Events in quadrant B5,370,3451,443,350
Events in quadrant C5,435,0351,351,981
Events in quadrant D6,211,9881,344,816

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02280
B02280
C02280
D02280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227453
B0231472
C0234142
D0259622

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11179840.751409%
B11179970.867698%
C111791561.395474%
D111791381.234457%

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 12634 11179 0 0 0.00% 0.00%
B 12634 11179 4 4 0.03% 0.04%
C 12634 11180 41 41 0.32% 0.37%
D 12634 11180 75 75 0.59% 0.67%

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 20609 71.95 1330 1301 268.4
A 6 16 17635 60.86 1330 1301 268.4
A 3 137 11960 39.72 1330 1301 268.4
B 0 189 66783 259.89 1323 1289 252.0
B 4 216 33192 126.59 1323 1289 252.0
B 12 111 30368 115.39 1323 1289 252.0
C 14 238 202732 688.4 1262 1270 292.7
C 0 207 136876 463.37 1262 1270 292.7
C 7 247 79140 266.08 1262 1270 292.7
D 7 238 1095878 3533.26 1287 1248 309.8
D 8 195 134535 430.23 1287 1248 309.8
D 2 234 51578 162.46 1287 1248 309.8

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