ASTROSAT CZTI

Data Quality Report

Orbit 37303

Creation date: 2024-06-27T21:38:07.830095
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/AS1A10_103T07_9000005302_37303cztM0_level2.evt modeM0/AS1A10_103T07_9000005302_37303cztM0_level2_quad_clean.evt
Size (bytes)309,738,24050,120,640
Size295.4 MB 47.8 MB
Events in quadrant A2,107,919307,328
Events in quadrant B2,165,383317,616
Events in quadrant C2,184,791319,086
Events in quadrant D2,648,728290,301

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A084571
B087231
C085541
D0103921

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0800
B0800
C0800
D0800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A401150.124657%
B4011320.797806%
C4011230.573423%
D40112004.986288%

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 4478 4478 1 1 0.02% 0.02%
B 4478 4478 13 13 0.29% 0.29%
C 4478 4478 20 20 0.45% 0.45%
D 4478 4478 157 157 3.51% 3.51%

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 165850 1667.23 495 486 99.2
A 9 143 10941 105.41 495 486 99.2
A 12 189 7301 68.71 495 486 99.2
B 12 18 65411 694.61 495 484 93.5
B 0 221 49013 519.18 495 484 93.5
B 0 213 46230 489.4 495 484 93.5
C 15 214 166167 1460.8 492 496 113.4
C 0 10 85954 753.52 492 496 113.4
C 14 254 10032 84.08 492 496 113.4
D 2 249 574211 4964.08 480 467 115.6
D 13 249 68043 584.67 480 467 115.6
D 12 227 60988 523.63 480 467 115.6

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