ASTROSAT CZTI

Data Quality Report

Orbit 33686

Creation date: 2024-06-27T20:51:31.640707
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/AS1T04_090T01_9000004812_33686cztM0_level2.evt modeM0/AS1T04_090T01_9000004812_33686cztM0_level2_quad_clean.evt
Size (bytes)472,328,64085,095,360
Size450.4 MB 81.2 MB
Events in quadrant A3,091,430557,577
Events in quadrant B3,867,952549,231
Events in quadrant C2,983,758573,519
Events in quadrant D4,017,769541,119

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124023
B0146472
C0118242
D0153312

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50671823.591869%
B50674108.091573%
C50671001.973554%
D50671242.447207%

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 7099 5068 162 162 2.28% 3.20%
B 7098 5067 358 358 5.04% 7.07%
C 7099 5068 79 79 1.11% 1.56%
D 7099 5068 120 120 1.69% 2.37%

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 15 237 643072 5428.28 598 587 118.4
A 15 169 105905 889.82 598 587 118.4
A 13 6 15898 129.36 598 587 118.4
B 5 172 1471303 13101.99 589 575 112.3
B 0 190 15086 129.27 589 575 112.3
B 4 81 14868 127.33 589 575 112.3
C 0 10 240765 1780.97 592 598 134.9
C 15 214 218919 1618.97 592 598 134.9
C 3 233 123416 910.76 592 598 134.9
D 8 195 1238637 7954.3 578 567 155.6
D 8 230 189589 1214.42 578 567 155.6
D 13 249 82711 527.76 578 567 155.6

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