ASTROSAT CZTI

Data Quality Report

Orbit 37181

Creation date: 2024-06-27T21:36:36.295732
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_079T01_9000005284_37181cztM0_level2.evt modeM0/AS1A11_079T01_9000005284_37181cztM0_level2_quad_clean.evt
Size (bytes)878,431,680120,395,520
Size837.7 MB 114.8 MB
Events in quadrant A5,369,843740,855
Events in quadrant B5,663,225744,827
Events in quadrant C5,836,421741,631
Events in quadrant D9,005,243672,261

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0228674
B0240843
C0240233
D0343313

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10776570.528953%
B107761821.688938%
C107761761.633259%
D107768878.231255%

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 13552 10778 30 30 0.22% 0.28%
B 13552 10778 121 121 0.89% 1.12%
C 13552 10778 157 157 1.16% 1.46%
D 13552 10778 765 765 5.64% 7.10%

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 453105 1826.48 1227 1201 247.4
A 15 237 86062 342.99 1227 1201 247.4
A 13 248 36715 143.54 1227 1201 247.4
B 5 184 410526 1746.24 1213 1178 234.4
B 5 172 212520 901.56 1213 1178 234.4
B 0 190 112719 475.82 1213 1178 234.4
C 15 214 456166 1637.34 1190 1201 277.9
C 1 23 302759 1085.26 1190 1201 277.9
C 0 10 266691 955.45 1190 1201 277.9
D 10 253 1994559 7069.89 1159 1127 282.0
D 1 52 1623653 5754.44 1159 1127 282.0
D 2 249 328675 1161.68 1159 1127 282.0

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