ASTROSAT CZTI

Data Quality Report

Orbit 50963

Creation date: 2025-03-01T11:15:17.773605
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/AS1C07_001T02_9000006452_50963cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_50963cztM0_level2_quad_clean.evt
Size (bytes)992,554,56089,009,280
Size946.6 MB 84.9 MB
Events in quadrant A7,993,792554,224
Events in quadrant B10,857,785552,624
Events in quadrant C6,181,606624,198
Events in quadrant D11,127,529440,212

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0289920
B0374670
C0235093
D0381900

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7520170422.659574%
B7520244532.513298%
C75195917.860088%
D7519248833.089507%

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 7520 7520 1372 1372 18.24% 18.24%
B 7520 7520 1920 1920 25.53% 25.53%
C 7519 7519 411 411 5.47% 5.47%
D 7519 7519 2313 2313 30.76% 30.76%

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 8 43 3565278 20237.08 702 685 176.1
A 14 254 695385 3943.98 702 685 176.1
A 4 3 239185 1354.02 702 685 176.1
B 5 236 6883967 45408.76 711 686 151.6
B 4 171 469517 3092.86 711 686 151.6
B 4 206 170104 1117.64 711 686 151.6
C 12 247 528572 2509.06 747 741 210.4
C 13 49 517038 2454.23 747 741 210.4
C 15 198 286962 1360.56 747 741 210.4
D 8 176 5587137 30481.4 649 625 183.3
D 15 184 1253802 6837.65 649 625 183.3
D 3 12 480046 2615.84 649 625 183.3

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