ASTROSAT CZTI

Data Quality Report

Orbit 54342

Creation date: 2025-10-15T12:28:20.683720
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_54342cztM0_level2.fits modeM0/AS1A14_126T15_9000006516_54342cztM0_level2_quad_clean.evt
Size (bytes)580,806,72087,960,960
Size553.9 MB 83.9 MB
Events in quadrant A2,918,365641,926
Events in quadrant B3,158,321689,869
Events in quadrant C5,465,027526,610
Events in quadrant D9,458,086356,528

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135031
B0137861
C0209581
D0325731

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6428781.213441%
B6429751.166589%
C642995414.839011%
D6429259440.348421%

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 7578 6429 31 31 0.41% 0.48%
B 7579 6430 14 14 0.18% 0.22%
C 7579 6431 876 876 11.56% 13.62%
D 7579 6431 2417 2417 31.89% 37.58%

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 3 110 110910 646.31 686 669 170.6
A 0 8 46700 269.87 686 669 170.6
A 5 243 32665 187.58 686 669 170.6
B 7 0 202637 1388.85 679 656 145.4
B 0 171 100114 683.89 679 656 145.4
B 10 247 64218 437.06 679 656 145.4
C 15 147 1694574 9916.74 620 613 170.8
C 13 3 450347 2632.82 620 613 170.8
C 15 189 440800 2576.93 620 613 170.8
D 8 176 5693177 40939.87 493 470 139.1
D 15 108 1572834 11307.87 493 470 139.1
D 2 120 119920 859.04 493 470 139.1

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