ASTROSAT CZTI

Data Quality Report

Orbit 54982

Creation date: 2025-11-27T11:09:52.188462
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_014T01_9000006528_54982cztM0_level2.fits modeM0/AS1A14_014T01_9000006528_54982cztM0_level2_quad_clean.evt
Size (bytes)797,906,88075,787,200
Size760.9 MB 72.3 MB
Events in quadrant A4,006,649595,021
Events in quadrant B4,503,284628,837
Events in quadrant C3,394,130607,368
Events in quadrant D17,123,0537,013

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167683
B0180133
C0148683
D0553543

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65424877.444207%
B65426359.706512%
C65421291.971874%
D6542648799.159279%

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 7602 6544 277 277 3.64% 4.23%
B 7602 6543 545 545 7.17% 8.33%
C 7602 6545 72 72 0.95% 1.10%
D 7601 6542 6359 6359 83.66% 97.20%

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 15 32 1118537 6544.91 692 676 170.8
A 0 8 150389 876.55 692 676 170.8
A 4 3 23391 132.99 692 676 170.8
B 4 81 1380099 9882.35 645 621 139.6
B 0 183 267660 1913.02 645 621 139.6
B 5 236 109669 781.2 645 621 139.6
C 13 3 153283 800.37 696 690 190.7
C 4 5 118084 615.75 696 690 190.7
C 1 16 111750 582.53 696 690 190.7
D 15 94 16200287 333288.23 168 160 48.6
D 2 249 74417 1527.7 168 160 48.6
D 11 129 54350 1114.86 168 160 48.6

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