ASTROSAT CZTI

Data Quality Report

Orbit 21426

Creation date: 2024-06-27T18:27:41.956600
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/AS1T03_140T01_9000003160_21426cztM0_level2.evt modeM0/AS1T03_140T01_9000003160_21426cztM0_level2_quad_clean.evt
Size (bytes)535,870,080101,632,320
Size511.0 MB 96.9 MB
Events in quadrant A3,527,232658,874
Events in quadrant B3,598,060664,366
Events in quadrant C3,445,809643,312
Events in quadrant D5,168,442609,010

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150312
B0152903
C0149562
D0201942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7208310.430078%
B7207480.666019%
C7207480.666019%
D72072803.885112%

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 7678 7209 0 0 0.00% 0.00%
B 7677 7207 9 9 0.12% 0.12%
C 7677 7208 0 0 0.00% 0.00%
D 7677 7208 288 288 3.75% 4.00%

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 5 168 104465 583.39 885 866 177.6
A 13 254 11035 57.26 885 866 177.6
A 11 47 10039 51.65 885 866 177.6
B 0 230 64089 374.92 879 857 168.7
B 0 228 29999 172.79 879 857 168.7
B 3 64 27332 156.98 879 857 168.7
C 14 238 131569 667.12 841 846 196.0
C 3 233 27774 137.42 841 846 196.0
C 0 236 9607 44.71 841 846 196.0
D 1 20 718432 3565.76 843 819 201.3
D 1 52 358333 1776.46 843 819 201.3
D 7 38 323361 1602.68 843 819 201.3

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