ASTROSAT CZTI

Data Quality Report

Orbit 54214

Creation date: 2025-10-05T23:48:12.043223
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_004T08_9000006514_54214cztM0_level2.fits modeM0/AS1C09_004T08_9000006514_54214cztM0_level2_quad_clean.evt
Size (bytes)613,823,04093,945,600
Size585.4 MB 89.6 MB
Events in quadrant A3,282,870680,413
Events in quadrant B3,924,110728,624
Events in quadrant C3,415,284631,897
Events in quadrant D11,544,174306,705

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151691
B0168233
C0157702
D03926911

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7137761.064873%
B71361261.765695%
C7137961.345103%
D7135367751.534688%

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 7707 7138 45 45 0.58% 0.63%
B 7708 7139 69 69 0.90% 0.97%
C 7708 7138 72 72 0.93% 1.01%
D 7706 7135 3338 3338 43.32% 46.78%

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 29 158865 856.36 748 730 184.7
A 15 174 64139 343.38 748 730 184.7
A 4 3 48545 258.94 748 730 184.7
B 8 234 484361 3051.12 743 716 158.5
B 5 236 202270 1271.52 743 716 158.5
B 4 171 82097 513.4 743 716 158.5
C 1 241 296136 1489.03 727 721 198.4
C 14 254 105557 528.42 727 721 198.4
C 12 2 51568 256.29 727 721 198.4
D 8 176 9158692 67562.06 470 449 135.6
D 3 12 193757 1426.07 470 449 135.6
D 2 172 77894 571.33 470 449 135.6

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