ASTROSAT CZTI

Data Quality Report

Orbit 56701

Creation date: 2026-03-22T08:45:20.300423
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/AS1A14_083T06_9000006558_56701cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56701cztM0_level2_quad_clean.evt
Size (bytes)610,925,760120,597,120
Size582.6 MB 115.0 MB
Events in quadrant A5,312,758801,717
Events in quadrant B3,939,686875,289
Events in quadrant C8,388,562644,378
Events in quadrant D4,294,595722,993

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0221670
B0185000
C0307350
D0193920

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A87432673.053872%
B8743630.720576%
C8744145016.582800%
D8744580.663312%

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 8743 8743 196 196 2.24% 2.24%
B 8743 8743 23 23 0.26% 0.26%
C 8744 8744 1236 1236 14.14% 14.14%
D 8744 8744 50 50 0.57% 0.57%

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 3 62 898745 3927.61 921 893 228.6
A 0 8 439806 1920.0 921 893 228.6
A 8 26 229290 999.11 921 893 228.6
B 10 247 62791 307.72 931 896 201.1
B 0 213 40878 198.78 931 896 201.1
B 4 21 36416 176.59 931 896 201.1
C 13 3 3713054 16371.81 831 820 226.7
C 15 164 515983 2271.99 831 820 226.7
C 15 230 425316 1872.12 831 820 226.7
D 2 249 383985 1525.74 898 855 251.1
D 3 12 92888 366.5 898 855 251.1
D 5 173 82294 324.31 898 855 251.1

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