ASTROSAT CZTI

Data Quality Report

Orbit 38980

Creation date: 2024-06-27T21:58:54.524964
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/AS1A12_057T01_9000005418_38980cztM0_level2.fits modeM0/AS1A12_057T01_9000005418_38980cztM0_level2_quad_clean.evt
Size (bytes)409,985,28093,602,880
Size391.0 MB 89.3 MB
Events in quadrant A3,072,842650,514
Events in quadrant B2,936,955651,640
Events in quadrant C2,717,207623,735
Events in quadrant D6,018,966520,674

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125073
B0123862
C0112982
D0218342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5538210.379198%
B55381142.058505%
C553830.054171%
D553869312.513543%

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 7271 5539 10 10 0.14% 0.18%
B 7271 5539 78 78 1.07% 1.41%
C 7271 5539 2 2 0.03% 0.04%
D 7271 5539 689 689 9.48% 12.44%

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 10 83 446841 3455.23 638 626 129.1
A 15 222 64971 498.25 638 626 129.1
A 13 248 51679 395.32 638 626 129.1
B 5 172 416021 3417.42 628 611 121.6
B 15 32 22589 180.8 628 611 121.6
B 12 111 14961 118.05 628 611 121.6
C 15 214 247662 1711.95 621 624 144.3
C 14 254 27137 183.73 621 624 144.3
C 12 249 5540 34.07 621 624 144.3
D 12 235 1396925 9592.83 596 580 145.6
D 12 233 1271616 8731.96 596 580 145.6
D 12 227 362873 2488.94 596 580 145.6

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