ASTROSAT CZTI

Data Quality Report

Orbit 58774

Creation date: 2026-08-09T13:10:24.714840
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_106T01_9000006596_58774cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58774cztM0_level2_quad_clean.evt
Size (bytes)764,164,80083,983,680
Size728.8 MB 80.1 MB
Events in quadrant A4,018,767663,914
Events in quadrant B4,168,949730,101
Events in quadrant C4,293,365627,682
Events in quadrant D15,295,37163,483

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016540255
B017174294
C017393216
D050686870

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01342
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65714376.650434%
B65642303.503961%
C65814366.625133%
D6539603592.292399%

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 7785 6593 295 295 3.79% 4.47%
B 7804 6584 80 80 1.03% 1.22%
C 7789 6599 266 266 3.42% 4.03%
D 7756 6551 5340 5340 68.85% 81.51%

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 15 233 978898 5170.75 762 741 189.2
A 5 113 29126 150.05 762 741 189.2
A 15 16 16250 81.98 762 741 189.2
B 0 171 364744 2260.88 753 725 161.0
B 10 44 293558 1818.75 753 725 161.0
B 8 234 102835 634.19 753 725 161.0
C 1 12 601609 3005.75 725 718 199.9
C 4 5 274700 1370.5 725 718 199.9
C 12 249 167731 835.42 725 718 199.9
D 12 110 9312745 69337.92 466 443 134.3
D 11 129 3634147 27055.98 466 443 134.3
D 2 120 169530 1258.99 466 443 134.3

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