ASTROSAT CZTI

Data Quality Report

Orbit 54339

Creation date: 2025-10-14T09:14:45.104986
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/AS1A14_126T15_9000006516_54339cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54339cztM0_level2_quad_clean.evt
Size (bytes)782,841,60083,952,000
Size746.6 MB 80.1 MB
Events in quadrant A3,255,016647,239
Events in quadrant B3,685,386692,857
Events in quadrant C7,641,616482,798
Events in quadrant D13,866,613242,667

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0147902
B0157382
C0278292
D0458262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6828600.878735%
B6828861.259520%
C6828168624.692443%
D6827427662.633660%

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 7838 6829 34 34 0.43% 0.50%
B 7838 6829 32 32 0.41% 0.47%
C 7838 6829 1611 1611 20.55% 23.59%
D 7836 6826 4138 4138 52.81% 60.62%

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 12 115 155538 888.29 710 693 174.3
A 7 29 114950 655.45 710 693 174.3
A 7 14 72494 411.9 710 693 174.3
B 7 0 455007 2967.17 707 682 153.1
B 10 247 121462 788.81 707 682 153.1
B 1 223 96693 627.04 707 682 153.1
C 1 241 3627854 21549.01 611 605 168.3
C 15 147 1472449 8744.03 611 605 168.3
C 14 254 91465 539.79 611 605 168.3
D 8 176 6476751 54272.05 414 395 119.3
D 15 108 4022673 33706.81 414 395 119.3
D 3 12 1445110 12106.75 414 395 119.3

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