ASTROSAT CZTI

Data Quality Report

Orbit 37551

Creation date: 2024-06-27T21:41:25.632760
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/AS1T05_051T01_9000005334_37551cztM0_level2.evt modeM0/AS1T05_051T01_9000005334_37551cztM0_level2_quad_clean.evt
Size (bytes)381,006,72050,077,440
Size363.4 MB 47.8 MB
Events in quadrant A2,601,762298,792
Events in quadrant B2,730,051307,328
Events in quadrant C3,191,798288,357
Events in quadrant D2,687,826283,517

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106103
B0111932
C0123102
D0112652

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4820120.248963%
B4820410.850622%
C48203016.244813%
D4820621.286307%

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 6943 4821 5 5 0.07% 0.10%
B 6943 4821 22 22 0.32% 0.46%
C 6943 4821 285 285 4.10% 5.91%
D 6943 4821 61 61 0.88% 1.27%

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 271574 2363.05 566 556 114.7
A 15 222 70126 606.59 566 556 114.7
A 6 10 30358 259.85 566 556 114.7
B 0 189 175769 1619.0 567 552 108.2
B 5 172 81256 745.7 567 552 108.2
B 5 255 76632 702.97 567 552 108.2
C 14 254 758395 6074.51 537 541 124.8
C 15 214 200219 1600.5 537 541 124.8
C 0 10 111939 892.9 537 541 124.8
D 2 249 191325 1440.69 544 530 132.4
D 12 217 113437 852.56 544 530 132.4
D 13 249 61560 460.84 544 530 132.4

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