ASTROSAT CZTI

Data Quality Report

Orbit 41025

Creation date: 2024-06-27T22:23:24.814312
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_029T02_9000005590_41025cztM0_level2.fits modeM0/AS1A12_029T02_9000005590_41025cztM0_level2_quad_clean.evt
Size (bytes)317,534,40095,843,520
Size302.8 MB 91.4 MB
Events in quadrant A2,971,024660,284
Events in quadrant B2,590,004674,926
Events in quadrant C2,885,471628,122
Events in quadrant D2,904,888577,042

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120023
B0108672
C0114962
D0119672

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5167130.251597%
B516780.154829%
C5167561.083801%
D51671102.128895%

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 7229 5168 3 3 0.04% 0.06%
B 7229 5168 5 5 0.07% 0.10%
C 7229 5168 51 51 0.71% 0.99%
D 7229 5168 72 72 1.00% 1.39%

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 496682 3948.93 624 612 125.6
A 12 189 55982 440.77 624 612 125.6
A 13 254 8698 64.37 624 612 125.6
B 0 190 133027 1118.28 619 602 118.4
B 5 172 18479 150.96 619 602 118.4
B 12 111 14598 118.19 619 602 118.4
C 15 214 221907 1565.72 609 611 141.3
C 0 10 118429 833.59 609 611 141.3
C 12 249 92950 653.32 609 611 141.3
D 13 249 348839 2362.94 602 584 147.4
D 2 249 129601 875.39 602 584 147.4
D 9 19 47224 316.46 602 584 147.4

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