ASTROSAT CZTI

Data Quality Report

Orbit 52640

Creation date: 2025-06-23T20:44:56.058835
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_011T06_9000006478_52640cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52640cztM0_level2_quad_clean.evt
Size (bytes)641,024,64083,424,960
Size611.3 MB 79.6 MB
Events in quadrant A3,792,680578,035
Events in quadrant B5,512,512581,711
Events in quadrant C6,450,194508,377
Events in quadrant D7,498,043428,982

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154841
B0206881
C0234041
D0266401

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61391953.176413%
B61405378.745928%
C613971911.712005%
D6139145123.635771%

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 7224 6140 152 152 2.10% 2.48%
B 7225 6140 379 379 5.25% 6.17%
C 7224 6140 702 702 9.72% 11.43%
D 7224 6140 1220 1220 16.89% 19.87%

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 7 206 525240 3276.97 633 618 160.1
A 5 246 251722 1568.48 633 618 160.1
A 3 46 117357 729.19 633 618 160.1
B 10 128 1929579 14966.49 612 593 128.9
B 5 185 503047 3898.41 612 593 128.9
B 12 32 149788 1157.56 612 593 128.9
C 15 248 3427152 20894.47 595 590 164.0
C 13 3 397025 2417.38 595 590 164.0
C 1 44 55635 335.65 595 590 164.0
D 8 176 4149943 25891.1 554 526 160.3
D 2 37 235017 1463.15 554 526 160.3
D 2 153 106377 660.48 554 526 160.3

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