ASTROSAT CZTI

Data Quality Report

Orbit 53135

Creation date: 2025-07-26T11:49:48.362989
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_011T07_9000006488_53135cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53135cztM0_level2_quad_clean.evt
Size (bytes)934,764,48072,002,880
Size891.5 MB 68.7 MB
Events in quadrant A16,551,386918
Events in quadrant B3,931,725685,063
Events in quadrant C8,076,466487,660
Events in quadrant D5,536,981550,940

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0534831
B0161221
C0285161
D0211481

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6525651999.908046%
B6525981.501916%
C6526157624.149556%
D65264887.477781%

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 7725 6526 5817 5817 75.30% 89.14%
B 7725 6526 57 57 0.74% 0.87%
C 7726 6527 1443 1443 18.68% 22.11%
D 7726 6527 478 478 6.19% 7.32%

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 9 191 15499684 333202.99 177 172 46.5
A 12 115 216003 4639.86 177 172 46.5
A 0 8 54425 1166.31 177 172 46.5
B 10 254 497163 3498.54 671 650 141.9
B 4 81 309797 2178.31 671 650 141.9
B 4 171 136116 954.52 671 650 141.9
C 9 38 3543531 21920.95 584 578 161.6
C 15 224 595430 3680.47 584 578 161.6
C 1 174 427784 2643.21 584 578 161.6
D 8 176 1452636 7869.63 635 606 184.5
D 9 19 372873 2017.59 635 606 184.5
D 12 3 284515 1538.71 635 606 184.5

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