ASTROSAT CZTI

Data Quality Report

Orbit 33253

Creation date: 2024-06-27T20:46:41.256307
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_047T10_9000004778_33253cztM0_level2.evt modeM0/AS1A11_047T10_9000004778_33253cztM0_level2_quad_clean.evt
Size (bytes)646,050,24069,975,360
Size616.1 MB 66.7 MB
Events in quadrant A8,554,411369,012
Events in quadrant B3,819,940461,309
Events in quadrant C2,637,649465,490
Events in quadrant D4,191,568447,826

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0291762
B0149931
C0113711
D0160481

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5341276351.731885%
B53413847.189665%
C5341530.992324%
D53412394.474817%

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 6983 5340 1317 1317 18.86% 24.66%
B 6984 5342 266 266 3.81% 4.98%
C 6984 5342 40 40 0.57% 0.75%
D 6984 5342 189 189 2.71% 3.54%

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 6565974 64154.51 509 498 102.3
A 13 6 13892 130.88 509 498 102.3
A 13 254 7837 71.71 509 498 102.3
B 5 172 1043504 9109.19 602 587 114.5
B 5 173 151859 1321.26 602 587 114.5
B 0 219 106917 928.72 602 587 114.5
C 0 10 155418 1110.64 602 606 139.4
C 14 67 54044 383.37 602 606 139.4
C 14 254 25867 181.23 602 606 139.4
D 8 195 972892 6233.76 597 582 156.0
D 7 204 177003 1131.09 597 582 156.0
D 2 250 161418 1031.17 597 582 156.0

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