ASTROSAT CZTI

Data Quality Report

Orbit 35743

Creation date: 2022-05-10T16:45:42.620166
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_029T07_9000005128_35743cztM0_level2.evt modeM0/AS1A09_029T07_9000005128_35743cztM0_level2_quad_clean.evt
Size (bytes)376,704,00067,282,560
Size359.3 MB 64.2 MB
Events in quadrant A2,514,347425,047
Events in quadrant B2,889,609428,212
Events in quadrant C2,822,019411,327
Events in quadrant D2,818,795398,408

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109463
B0120732
C0116622
D0121422

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A533940.074920%
B5339500.936505%
C5339901.685709%
D5339561.048886%

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 7041 5340 0 0 0.00% 0.00%
B 7041 5340 39 39 0.55% 0.73%
C 7041 5340 89 89 1.26% 1.67%
D 7041 5340 51 51 0.72% 0.96%

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 150530 1218.78 603 591 123.0
A 13 6 16539 129.63 603 591 123.0
A 13 254 8020 60.39 603 591 123.0
B 5 172 344686 2932.28 600 584 117.3
B 0 189 81197 686.95 600 584 117.3
B 4 232 36359 304.86 600 584 117.3
C 0 10 272194 2019.31 578 581 134.5
C 15 214 225271 1670.46 578 581 134.5
C 9 187 47337 347.61 578 581 134.5
D 13 249 206465 1438.22 579 563 143.2
D 1 52 118466 823.55 579 563 143.2
D 12 6 52601 363.48 579 563 143.2

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