ASTROSAT CZTI

Data Quality Report

Orbit 42527

Creation date: 2024-06-27T22:41:13.707246
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/AS1A07_041T01_9000005808_42527cztM0_level2.fits modeM0/AS1A07_041T01_9000005808_42527cztM0_level2_quad_clean.evt
Size (bytes)315,527,04094,829,760
Size300.9 MB 90.4 MB
Events in quadrant A3,055,459628,234
Events in quadrant B2,640,290642,693
Events in quadrant C2,718,431620,812
Events in quadrant D2,809,556570,834

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126832
B0120843
C0118802
D0126872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5851140.239275%
B5851290.495642%
C585160.102547%
D5851410.700735%

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 8925 5853 4 4 0.04% 0.07%
B 8925 5853 17 17 0.19% 0.29%
C 8925 5853 4 4 0.04% 0.07%
D 8925 5853 28 28 0.31% 0.48%

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 551130 4268.46 628 614 129.0
A 13 248 34715 264.4 628 614 129.0
A 2 79 32655 248.43 628 614 129.0
B 5 255 123449 993.11 628 609 123.7
B 0 245 44517 354.98 628 609 123.7
B 12 111 15906 123.67 628 609 123.7
C 15 214 242947 1660.92 622 626 145.9
C 0 239 19260 127.72 622 626 145.9
C 14 254 18352 121.5 622 626 145.9
D 12 6 210861 1392.49 616 598 151.0
D 2 249 119979 790.61 616 598 151.0
D 1 47 62174 407.79 616 598 151.0

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