ASTROSAT CZTI

Data Quality Report

Orbit 35791

Creation date: 2022-05-12T13:17:32.271289
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/AS1A09_029T09_9000005138_35791cztM0_level2.evt modeM0/AS1A09_029T09_9000005138_35791cztM0_level2_quad_clean.evt
Size (bytes)1,070,251,200133,954,560
Size1020.7 MB 127.7 MB
Events in quadrant A11,571,841805,745
Events in quadrant B6,809,273847,488
Events in quadrant C6,076,065835,999
Events in quadrant D7,207,330798,271

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02300
B02300
C02300
D02300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04221236
B02739011
C0247084
D02890116

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410
B0410
C0410
D0410

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1110110309.278443%
B111022121.909566%
C111071901.710633%
D111011761.585443%

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 15256 11109 649 649 4.25% 5.84%
B 15256 11109 131 131 0.86% 1.18%
C 15256 11111 171 171 1.12% 1.54%
D 15256 11108 142 142 0.93% 1.28%

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 15 169 6469150 25912.78 1242 1219 249.6
A 10 83 279558 1115.12 1242 1219 249.6
A 13 6 19507 73.27 1242 1219 249.6
B 5 172 460468 1927.68 1253 1218 238.2
B 0 213 414616 1735.22 1253 1218 238.2
B 4 171 298032 1245.86 1253 1218 238.2
C 15 214 463395 1631.36 1221 1228 283.3
C 0 10 385143 1355.15 1221 1228 283.3
C 1 23 331633 1166.27 1221 1228 283.3
D 8 195 767988 2584.46 1225 1190 296.7
D 14 52 567765 1909.62 1225 1190 296.7
D 13 249 414784 1394.0 1225 1190 296.7

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