ASTROSAT CZTI

Data Quality Report

Orbit 52115

Creation date: 2025-05-17T17:16:14.450259
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/AS1C09_011T07_9000006470_52115cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52115cztM0_level2_quad_clean.evt
Size (bytes)814,256,64071,637,120
Size776.5 MB 68.3 MB
Events in quadrant A3,144,998629,055
Events in quadrant B4,405,667619,538
Events in quadrant C7,300,491487,211
Events in quadrant D14,824,52014,035

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132993
B0171551
C0258369
D04811210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6000811.350000%
B60022984.965012%
C6000137522.916667%
D6000586397.716667%

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 6881 6002 21 21 0.31% 0.35%
B 6882 6003 176 176 2.56% 2.93%
C 6881 6001 1120 1120 16.28% 18.66%
D 6880 6000 5290 5290 76.89% 88.17%

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 4 3 191189 1124.96 656 638 169.4
A 5 240 72361 423.43 656 638 169.4
A 15 174 34591 200.45 656 638 169.4
B 4 171 290725 2175.87 626 606 133.3
B 10 254 257942 1930.0 626 606 133.3
B 0 170 224871 1681.97 626 606 133.3
C 15 224 3380503 21136.93 565 558 159.9
C 15 217 653508 4083.31 565 558 159.9
C 2 239 491859 3072.42 565 558 159.9
D 6 42 9064080 160212.4 191 183 56.6
D 15 94 4287364 75779.72 191 183 56.6
D 5 206 131169 2315.29 191 183 56.6

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