ASTROSAT CZTI

Data Quality Report

Orbit 37072

Creation date: 2024-06-27T21:35:12.444144
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/AS1A09_138T04_9000005282_37072cztM0_level2.evt modeM0/AS1A09_138T04_9000005282_37072cztM0_level2_quad_clean.evt
Size (bytes)441,771,84048,464,640
Size421.3 MB 46.2 MB
Events in quadrant A2,925,577287,885
Events in quadrant B3,293,239288,960
Events in quadrant C3,046,206272,060
Events in quadrant D3,768,401261,189

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116713
B0129492
C0119212
D0144502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5092160.314218%
B50921372.690495%
C5092921.806756%
D50921703.338570%

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 7215 5093 2 2 0.03% 0.04%
B 7215 5093 97 97 1.34% 1.90%
C 7215 5093 69 69 0.96% 1.35%
D 7215 5093 160 160 2.22% 3.14%

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 264572 1941.32 681 672 135.9
A 13 6 12676 88.3 681 672 135.9
A 13 254 7704 51.73 681 672 135.9
B 5 172 522096 4204.53 665 650 124.0
B 0 229 70065 559.71 665 650 124.0
B 0 190 33908 268.17 665 650 124.0
C 15 214 214972 1456.01 639 644 147.2
C 0 10 184143 1246.57 639 644 147.2
C 0 207 119583 807.99 639 644 147.2
D 1 47 290603 1872.72 647 633 154.8
D 6 112 262102 1688.65 647 633 154.8
D 2 153 237913 1532.43 647 633 154.8

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