ASTROSAT CZTI

Data Quality Report

Orbit 54736

Creation date: 2025-11-10T19:15:17.518662
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_103T01_9000006524_54736cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54736cztM0_level2_quad_clean.evt
Size (bytes)434,488,32096,897,600
Size414.4 MB 92.4 MB
Events in quadrant A3,085,196641,164
Events in quadrant B4,011,369671,126
Events in quadrant C3,492,428602,440
Events in quadrant D4,980,757558,902

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139772
B0165652
C0154293
D0194452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6605831.256624%
B66052984.511734%
C66041792.710478%
D66042724.118716%

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 7610 6606 1 1 0.01% 0.02%
B 7610 6605 141 141 1.85% 2.13%
C 7609 6605 145 145 1.91% 2.20%
D 7609 6605 251 251 3.30% 3.80%

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 3 14 115439 645.75 718 699 177.7
A 4 3 41187 227.86 718 699 177.7
A 4 249 30772 169.25 718 699 177.7
B 2 249 453357 3032.23 703 680 149.3
B 7 252 185483 1237.89 703 680 149.3
B 5 185 110263 734.03 703 680 149.3
C 1 16 230501 1212.39 688 682 189.6
C 6 223 208394 1095.77 688 682 189.6
C 4 5 146354 768.48 688 682 189.6
D 11 129 951560 4880.29 681 651 194.8
D 3 12 760390 3899.16 681 651 194.8
D 15 94 292407 1497.36 681 651 194.8

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