ASTROSAT CZTI

Data Quality Report

Orbit 40918

Creation date: 2024-06-27T22:22:11.341259
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/AS1T05_101T01_9000005578_40918cztM0_level2.fits modeM0/AS1T05_101T01_9000005578_40918cztM0_level2_quad_clean.evt
Size (bytes)15,834,2403,839,040
Size15.1 MB 3.7 MB
Events in quadrant A134,60624,224
Events in quadrant B112,73624,771
Events in quadrant C129,89523,210
Events in quadrant D187,03619,531

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05300
B04750
C05100
D07000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A23400.000000%
B23400.000000%
C23410.427350%
D234208.547009%

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 234 234 0 0 0.00% 0.00%
B 234 234 0 0 0.00% 0.00%
C 234 234 0 0 0.00% 0.00%
D 234 234 16 16 6.84% 6.84%

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 10 83 20739 2617.68 27 27 7.9
A 13 248 6119 769.94 27 27 7.9
A 13 254 354 41.33 27 27 7.9
B 7 202 638 81.55 28 27 7.5
B 0 186 621 79.28 28 27 7.5
B 12 111 604 77.01 28 27 7.5
C 15 214 10423 1235.86 28 28 8.4
C 0 207 7903 936.26 28 28 8.4
C 3 233 919 105.93 28 28 8.4
D 12 16 64946 7548.23 27 26 8.6
D 7 223 4788 553.68 27 26 8.6
D 1 52 3993 461.24 27 26 8.6

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