ASTROSAT CZTI

Data Quality Report

Orbit 39513

Creation date: 2024-06-27T22:05:31.829416
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/AS1A12_018T01_9000005488_39513cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39513cztM0_level2_quad_clean.evt
Size (bytes)1,159,344,000241,603,200
Size1.1 GB 230.4 MB
Events in quadrant A9,063,5011,643,094
Events in quadrant B6,801,8631,716,490
Events in quadrant C15,211,3481,456,340
Events in quadrant D10,634,0741,424,906

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0364415
B0316154
C0555494
D0428134

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0450
B0450
C0450
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A155674552.922850%
B15567410.263378%
C15567177711.415173%
D155679195.903514%

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 19807 15570 392 392 1.98% 2.52%
B 19807 15570 14 14 0.07% 0.09%
C 19807 15570 1707 1707 8.62% 10.96%
D 19807 15570 875 875 4.42% 5.62%

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 7 192 1250300 3705.93 1664 1631 336.9
A 10 83 1116480 3308.76 1664 1631 336.9
A 13 248 167629 492.67 1664 1631 336.9
B 5 172 99998 306.42 1671 1621 321.1
B 5 255 83976 256.51 1671 1621 321.1
B 12 111 41665 124.73 1671 1621 321.1
C 9 187 7139594 19787.47 1554 1562 360.7
C 15 208 1395498 3864.16 1554 1562 360.7
C 15 214 610117 1686.99 1554 1562 360.7
D 12 227 2066297 5263.81 1612 1563 392.3
D 2 249 1134307 2887.8 1612 1563 392.3
D 13 249 958043 2438.44 1612 1563 392.3

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