ASTROSAT CZTI

Data Quality Report

Orbit 56344

Creation date: 2026-02-26T08:18:11.942380
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_049T01_9000006552_56344cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56344cztM0_level2_quad_clean.evt
Size (bytes)677,151,36092,148,480
Size645.8 MB 87.9 MB
Events in quadrant A4,803,968614,081
Events in quadrant B4,248,700680,497
Events in quadrant C6,912,099540,073
Events in quadrant D8,565,017473,225

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0193462
B0173692
C0253382
D0302132

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69195087.342101%
B69193024.364793%
C6919110315.941610%
D6919144520.884521%

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 8739 6921 480 480 5.49% 6.94%
B 8739 6921 150 150 1.72% 2.17%
C 8739 6920 911 911 10.42% 13.16%
D 8739 6919 1346 1346 15.40% 19.45%

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 4 95 1147660 6477.5 712 698 177.1
A 3 78 398023 2243.9 712 698 177.1
A 1 191 131106 736.48 712 698 177.1
B 5 172 383637 2492.97 719 694 153.6
B 0 171 338048 2196.19 719 694 153.6
B 5 185 263567 1711.31 719 694 153.6
C 12 254 1515798 8381.97 657 651 180.8
C 15 230 1297409 7173.81 657 651 180.8
C 13 3 934428 5165.76 657 651 180.8
D 8 129 3973132 21546.78 638 609 184.4
D 8 240 659822 3575.54 638 609 184.4
D 6 239 538517 2917.59 638 609 184.4

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