ASTROSAT CZTI

Data Quality Report

Orbit 52949

Creation date: 2025-07-17T10:16:15.108505
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/AS1A13_003T01_9000006486_52949cztM0_level2.fits modeM0/AS1A13_003T01_9000006486_52949cztM0_level2_quad_clean.evt
Size (bytes)3,963,263,040268,606,080
Size3.7 GB 256.2 MB
Events in quadrant A65,275,84477,387
Events in quadrant B13,436,2442,750,786
Events in quadrant C42,968,7131,366,855
Events in quadrant D23,015,8192,139,465

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02116465
B0580658
C01457065
D0861685

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05320
B05320
C05320
D05320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A261322551797.646564%
B261326042.311342%
C261321150344.018827%
D2613224609.413746%

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 31586 26131 24277 24277 76.86% 92.90%
B 31587 26135 173 173 0.55% 0.66%
C 31587 26136 10062 10062 31.85% 38.50%
D 31587 26135 1836 1836 5.81% 7.03%

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 9 191 60121144 224856.85 1070 1044 267.4
A 12 17 226883 844.67 1070 1044 267.4
A 8 43 150077 557.4 1070 1044 267.4
B 1 255 508573 842.5 2820 2716 600.4
B 10 254 424628 702.69 2820 2716 600.4
B 10 63 362392 599.04 2820 2716 600.4
C 10 171 13618819 22278.08 2209 2187 611.2
C 15 254 8055750 13176.38 2209 2187 611.2
C 7 80 4793475 7838.99 2209 2187 611.2
D 8 176 5612624 7480.2 2662 2543 750.0
D 15 78 2834876 3776.49 2662 2543 750.0
D 2 249 787032 1046.0 2662 2543 750.0

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