ASTROSAT CZTI

Data Quality Report

Orbit 37659

Creation date: 2024-06-27T21:42:45.990655
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_075T01_9000005342_37659cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37659cztM0_level2_quad_clean.evt
Size (bytes)812,436,480118,249,920
Size774.8 MB 112.8 MB
Events in quadrant A5,713,865713,675
Events in quadrant B5,471,783729,306
Events in quadrant C5,161,812731,501
Events in quadrant D7,550,104682,314

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230583
B0228332
C0213962
D0294972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10454440.420892%
B104542011.922709%
C10454140.133920%
D104544494.295007%

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 13291 10456 37 37 0.28% 0.35%
B 13291 10454 123 123 0.93% 1.18%
C 13291 10454 8 8 0.06% 0.08%
D 13291 10454 427 427 3.21% 4.08%

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 499889 2059.88 1204 1179 242.1
A 15 222 444369 1830.56 1204 1179 242.1
A 9 143 60639 245.59 1204 1179 242.1
B 5 172 482266 2085.26 1194 1160 230.7
B 5 200 77261 329.84 1194 1160 230.7
B 0 230 74607 318.34 1194 1160 230.7
C 15 214 474052 1735.04 1176 1183 272.5
C 0 10 70048 252.68 1176 1183 272.5
C 15 159 14049 47.21 1176 1183 272.5
D 12 227 1230707 4377.88 1157 1125 280.9
D 4 239 772399 2746.09 1157 1125 280.9
D 13 249 259968 921.6 1157 1125 280.9

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