ASTROSAT CZTI

Data Quality Report

Orbit 53022

Creation date: 2025-07-17T18:00:50.308214
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_9000006488_53022cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53022cztM0_level2_quad_clean.evt
Size (bytes)1,061,087,04062,202,240
Size1011.9 MB 59.3 MB
Events in quadrant A15,666,83522,863
Events in quadrant B4,363,068605,401
Events in quadrant C11,511,966319,146
Events in quadrant D7,235,460483,874

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05081943
B0178005
C03869417
D0260059

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6480629097.067901%
B64845768.883405%
C6485317648.974557%
D6484103215.916101%

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 7385 6481 5983 5983 81.02% 92.32%
B 7387 6487 383 383 5.18% 5.90%
C 7387 6486 3042 3042 41.18% 46.90%
D 7387 6487 935 935 12.66% 14.41%

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 9 191 13056711 210155.64 242 237 62.1
A 15 190 691879 11132.6 242 237 62.1
A 7 206 674404 10851.32 242 237 62.1
B 10 44 1433056 10394.2 639 618 137.8
B 4 81 99921 720.57 639 618 137.8
B 10 191 88135 635.05 639 618 137.8
C 1 241 5662052 40986.92 497 491 138.1
C 15 224 2260340 16360.19 497 491 138.1
C 9 38 852736 6169.83 497 491 138.1
D 12 17 2723802 15525.53 614 585 175.4
D 2 153 461259 2626.38 614 585 175.4
D 15 78 361285 2056.41 614 585 175.4

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