ASTROSAT CZTI

Data Quality Report

Orbit 36117

Creation date: 2022-08-10T13:15:07.189915
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_069T01_9000005158_36117cztM0_level2.evt modeM0/AS1T04_069T01_9000005158_36117cztM0_level2_quad_clean.evt
Size (bytes)508,970,88045,014,400
Size485.4 MB 42.9 MB
Events in quadrant A2,568,214265,615
Events in quadrant B4,058,283243,362
Events in quadrant C2,918,097260,219
Events in quadrant D5,526,990238,432

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0105543
B0153082
C0113712
D0200122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5055110.217606%
B505555410.959446%
C50551162.294758%
D50553176.271019%

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 7209 5056 2 2 0.03% 0.04%
B 7209 5056 356 356 4.94% 7.04%
C 7209 5056 91 91 1.26% 1.80%
D 7209 5056 288 288 4.00% 5.70%

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 167476 1343.11 615 604 124.2
A 9 143 10737 81.56 615 604 124.2
A 13 6 8660 64.84 615 604 124.2
B 5 172 1462401 13070.32 586 571 111.8
B 5 236 106840 950.16 586 571 111.8
B 0 213 61952 548.81 586 571 111.8
C 0 10 378835 2729.35 593 598 138.6
C 15 214 214226 1541.54 593 598 138.6
C 1 23 8754 58.85 593 598 138.6
D 10 203 2179569 15227.43 581 566 143.1
D 12 17 437771 3055.3 581 566 143.1
D 12 6 290817 2028.35 581 566 143.1

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