ASTROSAT CZTI

Data Quality Report

Orbit 50300

Creation date: 2025-01-15T14:32:56.442040
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_003T01_9000006442_50300cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50300cztM0_level2_quad_clean.evt
Size (bytes)1,075,438,08066,047,040
Size1.0 GB 63.0 MB
Events in quadrant A5,580,140597,881
Events in quadrant B5,978,911606,378
Events in quadrant C13,885,77396,260
Events in quadrant D13,847,914232,885

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0211641
B0223911
C0458241
D0457241

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66844005.984440%
B668486112.881508%
C6685569285.145849%
D6685422063.126402%

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 7599 6685 279 279 3.67% 4.17%
B 7599 6685 644 644 8.47% 9.63%
C 7600 6686 3874 3874 50.97% 57.94%
D 7600 6685 4321 4321 56.86% 64.64%

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 14 932799 5458.18 698 684 170.8
A 0 98 437766 2559.42 698 684 170.8
A 4 13 239062 1395.87 698 684 170.8
B 4 206 2241828 15325.22 680 656 146.2
B 0 198 159777 1088.08 680 656 146.2
B 5 185 140781 958.18 680 656 146.2
C 4 111 9260170 127922.89 242 240 72.4
C 15 197 2071168 28609.19 242 240 72.4
C 15 199 257303 3551.24 242 240 72.4
D 7 61 7679721 58830.29 447 432 130.5
D 12 6 2470500 18922.95 447 432 130.5
D 2 37 447996 3428.74 447 432 130.5

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