ASTROSAT CZTI

Data Quality Report

Orbit 58892

Creation date: 2026-08-16T17:25:17.088639
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_004T07_9000006598_58892cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58892cztM0_level2_quad_clean.evt
Size (bytes)528,177,60099,178,560
Size503.7 MB 94.6 MB
Events in quadrant A3,611,291671,678
Events in quadrant B3,646,736710,516
Events in quadrant C4,512,275604,989
Events in quadrant D7,269,575556,704

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148292
B0151092
C0179022
D0261662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65911572.382036%
B65912664.035806%
C65914877.388864%
D659173211.106054%

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 7641 6592 9 9 0.12% 0.14%
B 7641 6592 72 72 0.94% 1.09%
C 7641 6592 399 399 5.22% 6.05%
D 7641 6592 604 604 7.90% 9.16%

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 14 238 267703 1420.74 772 752 187.9
A 0 24 185637 983.98 772 752 187.9
A 15 233 94669 499.84 772 752 187.9
B 4 171 179592 1110.13 756 731 161.1
B 4 236 106102 654.0 756 731 161.1
B 5 185 87852 540.73 756 731 161.1
C 12 249 1362874 6900.45 723 717 197.4
C 3 233 129056 650.14 723 717 197.4
C 4 5 66712 334.32 723 717 197.4
D 12 110 3941187 19192.17 726 693 205.3
D 11 129 94400 456.4 726 693 205.3
D 7 222 62118 299.17 726 693 205.3

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

TCT plots

Parameter TCT0 TCT_healed
Tct