ASTROSAT CZTI

Data Quality Report

Orbit 50221

Creation date: 2025-01-10T21:15:07.095650
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_003T01_9000006442_50221cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50221cztM0_level2_quad_clean.evt
Size (bytes)1,282,219,20080,988,480
Size1.2 GB 77.2 MB
Events in quadrant A10,868,194491,306
Events in quadrant B6,627,983731,196
Events in quadrant C15,478,877281,013
Events in quadrant D13,895,858412,060

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0376240
B0250460
C0512860
D0466134

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7705269434.964309%
B77057629.889682%
C7706486363.106670%
D7705321041.661259%

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 7705 7705 2443 2443 31.71% 31.71%
B 7705 7705 518 518 6.72% 6.72%
C 7705 7705 4747 4747 61.61% 61.61%
D 7704 7704 3069 3069 39.84% 39.84%

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 0 98 4780070 26897.75 708 689 177.7
A 4 249 1131842 6365.99 708 689 177.7
A 4 156 354863 1993.25 708 689 177.7
B 4 206 2536962 15235.83 792 765 166.5
B 5 185 210897 1262.34 792 765 166.5
B 8 128 104541 623.42 792 765 166.5
C 4 111 4050854 27244.0 531 526 148.7
C 15 197 3590745 24149.14 531 526 148.7
C 15 213 1249504 8401.09 531 526 148.7
D 15 108 3053583 15550.91 692 669 196.3
D 7 61 2344216 11937.54 692 669 196.3
D 15 94 1228501 6254.32 692 669 196.3

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