ASTROSAT CZTI

Data Quality Report

Orbit 58929

Creation date: 2026-08-19T06:14:37.466575
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_58929cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58929cztM0_level2_quad_clean.evt
Size (bytes)888,612,48085,040,640
Size847.4 MB 81.1 MB
Events in quadrant A5,805,617588,442
Events in quadrant B4,428,997716,875
Events in quadrant C6,278,997595,480
Events in quadrant D15,828,664178,438

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222362
B0181058
C0237132
D0519302

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7113102414.396176%
B71134065.707859%
C711390212.681007%
D7113537475.551807%

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 8668 7113 877 877 10.12% 12.33%
B 8667 7114 285 285 3.29% 4.01%
C 8668 7114 794 794 9.16% 11.16%
D 8667 7113 5288 5288 61.01% 74.34%

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 2676311 15155.36 711 692 176.5
A 3 14 98904 556.3 711 692 176.5
A 0 24 98276 552.74 711 692 176.5
B 4 236 776367 4733.22 759 731 163.9
B 4 171 222846 1355.43 759 731 163.9
B 5 185 168402 1023.19 759 731 163.9
C 4 5 1562480 7827.84 721 715 199.5
C 12 249 893767 4476.13 721 715 199.5
C 15 208 309952 1549.95 721 715 199.5
D 12 110 12475233 87385.03 493 470 142.8
D 11 129 1010041 7071.99 493 470 142.8
D 7 222 171949 1201.2 493 470 142.8

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

TCT plots

Parameter TCT0 TCT_healed
Tct