ASTROSAT CZTI

Data Quality Report

Orbit 53730

Creation date: 2025-09-03T09:22:07.654607
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_022T04_9000006506_53730cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53730cztM0_level2_quad_clean.evt
Size (bytes)1,015,899,84067,040,640
Size968.8 MB 63.9 MB
Events in quadrant A16,654,85630,087
Events in quadrant B3,042,516677,526
Events in quadrant C11,238,114336,514
Events in quadrant D6,161,761527,718

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0540381
B0139001
C0379001
D0229822

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6570629695.829528%
B6570701.065449%
C6571320548.774920%
D657066610.136986%

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 7665 6570 6092 6092 79.48% 92.72%
B 7665 6571 27 27 0.35% 0.41%
C 7666 6572 2663 2663 34.74% 40.52%
D 7665 6571 626 626 8.17% 9.53%

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 63 14355256 207334.24 276 270 69.2
A 3 78 1106312 15974.96 276 270 69.2
A 3 94 52463 753.84 276 270 69.2
B 0 213 90682 598.38 692 670 150.4
B 4 216 62577 411.54 692 670 150.4
B 5 185 50430 330.79 692 670 150.4
C 15 224 5481504 39905.74 489 487 137.3
C 1 241 3231784 23526.17 489 487 137.3
C 15 158 86152 623.7 489 487 137.3
D 1 241 1829403 9840.9 648 618 185.8
D 7 30 306231 1644.54 648 618 185.8
D 6 239 282889 1518.93 648 618 185.8

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