ASTROSAT CZTI

Data Quality Report

Orbit 27355

Creation date: 2024-06-27T19:39:13.895535
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_038T11_9000003924_27355cztM0_level2.evt modeM0/AS1A09_038T11_9000003924_27355cztM0_level2_quad_clean.evt
Size (bytes)342,987,84082,900,800
Size327.1 MB 79.1 MB
Events in quadrant A2,004,772578,408
Events in quadrant B2,058,920591,104
Events in quadrant C3,191,756518,657
Events in quadrant D2,871,608552,376

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A083970
B084590
C0120480
D0110940

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3820501.308901%
B3820471.230366%
C382058415.287958%
D38201814.738220%

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 4990 3820 8 8 0.16% 0.21%
B 4990 3820 3 3 0.06% 0.08%
C 4990 3820 348 348 6.97% 9.11%
D 4990 3821 141 141 2.83% 3.69%

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 13 248 36419 357.85 508 501 100.4
A 13 254 7060 65.35 508 501 100.4
A 8 192 5848 53.27 508 501 100.4
B 5 172 28365 294.42 505 494 94.7
B 0 190 22416 231.57 505 494 94.7
B 0 182 11314 114.3 505 494 94.7
C 2 16 1330966 12712.23 452 456 104.7
C 14 238 75643 718.37 452 456 104.7
C 15 208 23087 216.23 452 456 104.7
D 1 52 813500 6705.18 485 474 121.3
D 2 250 162885 1339.43 485 474 121.3
D 2 120 31253 253.84 485 474 121.3

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