ASTROSAT CZTI

Data Quality Report

Orbit 33252

Creation date: 2024-06-27T20:46:39.513935
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_046T01_9000004776_33252cztM0_level2.evt modeM0/AS1A11_046T01_9000004776_33252cztM0_level2_quad_clean.evt
Size (bytes)246,582,72055,981,440
Size235.2 MB 53.4 MB
Events in quadrant A1,667,730386,684
Events in quadrant B2,143,089372,868
Events in quadrant C1,438,537373,194
Events in quadrant D2,027,035362,588

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A068351
B082671
C060311
D078431

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A279470.250537%
B27941585.654975%
C2794371.324266%
D2794160.572656%

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 2794 2794 2 2 0.07% 0.07%
B 2794 2794 120 120 4.29% 4.29%
C 2794 2794 24 24 0.86% 0.86%
D 2794 2794 16 16 0.57% 0.57%

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 390299 5937.76 328 322 65.7
A 13 6 7578 110.48 328 322 65.7
A 13 254 4935 70.24 328 322 65.7
B 5 172 526609 8689.99 319 311 60.6
B 0 219 125229 2062.59 319 311 60.6
B 5 200 85888 1413.01 319 311 60.6
C 0 10 123520 1656.71 321 322 74.4
C 10 49 47972 640.77 321 322 74.4
C 14 254 9143 118.62 321 322 74.4
D 8 195 590865 6942.95 322 315 85.1
D 2 250 74960 877.58 322 315 85.1
D 12 218 19368 224.0 322 315 85.1

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