ASTROSAT CZTI

Data Quality Report

Orbit 33489

Creation date: 2024-06-27T20:49:23.926917
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/AS1A11_060T01_9000004804_33489cztM0_level2.evt modeM0/AS1A11_060T01_9000004804_33489cztM0_level2_quad_clean.evt
Size (bytes)928,848,960152,893,440
Size885.8 MB 145.8 MB
Events in quadrant A4,818,9831,009,265
Events in quadrant B6,926,183975,836
Events in quadrant C6,385,929973,491
Events in quadrant D9,281,773935,845

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213952
B0273781
C0256641
D0349371

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02180
B02180
C02180
D02180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10622120.112973%
B106225605.272077%
C106221681.581623%
D106224964.669554%

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 13458 10624 0 0 0.00% 0.00%
B 13458 10624 440 440 3.27% 4.14%
C 13458 10624 172 172 1.28% 1.62%
D 13458 10624 417 417 3.10% 3.93%

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 16248 60.21 1243 1217 249.6
A 13 6 15058 55.44 1243 1217 249.6
A 3 137 12594 45.57 1243 1217 249.6
B 5 172 1581788 6762.75 1210 1177 233.7
B 5 255 359586 1533.48 1210 1177 233.7
B 4 251 74255 312.67 1210 1177 233.7
C 9 236 817042 2975.24 1193 1203 274.2
C 15 214 448367 1630.74 1193 1203 274.2
C 14 67 256529 931.14 1193 1203 274.2
D 8 195 2756934 9642.28 1177 1146 285.8
D 13 249 1209108 4226.56 1177 1146 285.8
D 2 250 295321 1029.3 1177 1146 285.8

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