ASTROSAT CZTI

Data Quality Report

Orbit 10518

Creation date: 2024-06-27T16:00:24.836432
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/AS1A03_127T02_9000001522_10518cztM0_level2.evt modeM0/AS1A03_127T02_9000001522_10518cztM0_level2_quad_clean.evt
Size (bytes)1,776,798,720408,939,840
Size1.7 GB 390.0 MB
Events in quadrant A11,255,6052,683,288
Events in quadrant B14,584,6602,688,129
Events in quadrant C10,249,0442,820,906
Events in quadrant D16,165,5212,608,120

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0487866
B05856111
C0473697
D06312514

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04680
B04680
C04680
D04680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A230385472.374338%
B2303516177.019753%
C230373931.705951%
D2303713946.051135%

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 31716 23042 68 68 0.21% 0.30%
B 31716 23042 879 879 2.77% 3.81%
C 31716 23042 13 13 0.04% 0.06%
D 31716 23042 890 890 2.81% 3.86%

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 13 251 379291 710.1 2615 2549 530.5
A 15 239 277623 518.47 2615 2549 530.5
A 5 16 276284 515.95 2615 2549 530.5
B 4 239 3613016 7364.65 2598 2525 490.2
B 11 51 357701 724.48 2598 2525 490.2
B 0 214 211915 427.11 2598 2525 490.2
C 14 234 125235 207.1 2591 2599 592.2
C 13 61 19168 27.98 2591 2599 592.2
C 1 3 8724 10.34 2591 2599 592.2
D 1 52 1575424 2663.05 2492 2419 590.7
D 8 195 1332351 2251.54 2492 2419 590.7
D 1 20 924322 1560.76 2492 2419 590.7

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