ASTROSAT CZTI

Data Quality Report

Orbit 52564

Creation date: 2025-06-16T23:19:53.996744
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/AS1C09_011T06_9000006478_52564cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52564cztM0_level2_quad_clean.evt
Size (bytes)1,936,465,920233,585,280
Size1.8 GB 222.8 MB
Events in quadrant A10,033,0901,664,707
Events in quadrant B14,726,5091,734,004
Events in quadrant C13,989,8661,481,530
Events in quadrant D31,522,037929,279

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0426773
B0563543
C0544093
D01064193

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03720
B03720
C03720
D03720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A182974912.683500%
B1829711476.268787%
C1829711666.372629%
D18297752341.116030%

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 19532 18301 207 207 1.06% 1.13%
B 19532 18301 540 540 2.76% 2.95%
C 19532 18300 1075 1075 5.50% 5.87%
D 19531 18299 6865 6865 35.15% 37.52%

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 5 243 447292 931.0 1936 1888 478.4
A 4 249 361223 751.1 1936 1888 478.4
A 7 112 216398 448.38 1936 1888 478.4
B 4 170 1489233 3728.98 1879 1813 398.9
B 7 0 1450892 3632.86 1879 1813 398.9
B 10 44 1109469 2776.91 1879 1813 398.9
C 15 248 2560792 5043.91 1839 1814 507.3
C 10 22 1904873 3751.05 1839 1814 507.3
C 13 3 449522 882.46 1839 1814 507.3
D 6 42 7696050 17219.24 1559 1489 446.9
D 8 176 4963299 11103.76 1559 1489 446.9
D 12 17 2222700 4970.73 1559 1489 446.9

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