ASTROSAT CZTI

Data Quality Report

Orbit 26956

Creation date: 2024-06-27T19:34:55.140419
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_134T01_9000003896_26956cztM0_level2.evt modeM0/AS1A09_134T01_9000003896_26956cztM0_level2_quad_clean.evt
Size (bytes)925,767,36087,863,040
Size882.9 MB 83.8 MB
Events in quadrant A4,903,915585,882
Events in quadrant B13,715,236430,576
Events in quadrant C3,623,554587,738
Events in quadrant D5,302,019547,871

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192480
B0457630
C0151470
D0203900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72895036.900809%
B7289484066.401427%
C72892002.743861%
D72894386.009055%

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 7624 7289 297 297 3.90% 4.07%
B 7623 7288 3693 3693 48.45% 50.67%
C 7624 7289 0 0 0.00% 0.00%
D 7624 7289 324 324 4.25% 4.45%

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 6 16 1004761 5611.04 888 867 178.9
A 14 235 416559 2323.42 888 867 178.9
A 0 13 32310 175.74 888 867 178.9
B 0 189 10771148 76241.41 739 720 141.3
B 12 111 16535 111.95 739 720 141.3
B 0 219 15765 106.5 739 720 141.3
C 14 238 138264 670.13 876 882 205.0
C 0 207 33289 158.08 876 882 205.0
C 2 16 15650 72.04 876 882 205.0
D 1 52 1624061 7942.32 863 837 204.4
D 2 250 219293 1068.89 863 837 204.4
D 12 1 95442 462.9 863 837 204.4

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