ASTROSAT CZTI

Data Quality Report

Orbit 21027

Creation date: 2024-06-27T18:22:39.593436
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/AS1A05_075T06_9000003104_21027cztM0_level2.evt modeM0/AS1A05_075T06_9000003104_21027cztM0_level2_quad_clean.evt
Size (bytes)420,065,28086,544,000
Size400.6 MB 82.5 MB
Events in quadrant A2,804,749559,990
Events in quadrant B3,208,592568,313
Events in quadrant C2,864,285543,680
Events in quadrant D3,433,813527,466

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123202
B0136582
C0124032
D0144032

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6030120.199005%
B6030480.796020%
C6030490.812604%
D6030871.442786%

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 7125 6030 0 0 0.00% 0.00%
B 7125 6030 9 9 0.13% 0.15%
C 7125 6030 0 0 0.00% 0.00%
D 7125 6030 70 70 0.98% 1.16%

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 13 254 7867 48.68 727 710 147.0
A 0 226 6292 37.97 727 710 147.0
A 3 137 5707 33.99 727 710 147.0
B 0 189 102376 735.05 731 713 138.3
B 4 216 82278 589.73 731 713 138.3
B 7 220 70925 507.65 731 713 138.3
C 14 238 110727 667.4 705 710 164.8
C 13 61 4943 25.68 705 710 164.8
C 3 233 1853 6.93 705 710 164.8
D 15 0 357730 2058.04 710 690 173.5
D 1 20 122520 702.25 710 690 173.5
D 6 143 76184 435.16 710 690 173.5

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