ASTROSAT CZTI

Data Quality Report

Orbit 48441

Creation date: 2024-09-12T11:09:49.883230
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/AS1A13_029T01_9000006426_48441cztM0_level2.fits modeM0/AS1A13_029T01_9000006426_48441cztM0_level2_quad_clean.evt
Size (bytes)777,703,680171,745,920
Size741.7 MB 163.8 MB
Events in quadrant A11,302,3441,103,442
Events in quadrant B5,642,6631,167,418
Events in quadrant C5,386,6571,127,131
Events in quadrant D5,594,3181,031,345

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0411332
B0248372
C0244312
D0251462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02260
B02260
C02260
D02260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A111346625.945752%
B111343002.694449%
C111351511.356084%
D111351661.490795%

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 11299 11137 99 99 0.88% 0.89%
B 11299 11138 38 38 0.34% 0.34%
C 11300 11137 60 60 0.53% 0.54%
D 11300 11138 66 66 0.58% 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 10 83 6310001 25124.7 1201 1175 251.1
A 13 248 334304 1326.68 1201 1175 251.1
A 13 254 21413 80.6 1201 1175 251.1
B 12 16 777176 3191.36 1217 1173 243.2
B 12 111 31072 122.96 1217 1173 243.2
B 11 111 28994 114.41 1217 1173 243.2
C 12 2 623566 2178.6 1202 1207 285.7
C 15 208 50128 171.25 1202 1207 285.7
C 14 254 16588 53.84 1202 1207 285.7
D 12 2 453753 1499.49 1199 1158 301.8
D 2 120 117354 384.97 1199 1158 301.8
D 5 32 96043 314.36 1199 1158 301.8

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