ASTROSAT CZTI

Data Quality Report

Orbit 53656

Creation date: 2025-08-30T11:49:05.888701
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_022T05_9000006504_53656cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53656cztM0_level2_quad_clean.evt
Size (bytes)2,232,812,160170,720,640
Size2.1 GB 162.8 MB
Events in quadrant A37,701,692129,485
Events in quadrant B9,048,8481,611,248
Events in quadrant C22,551,361995,911
Events in quadrant D12,091,2161,307,607

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03320
B03320
C03320
D03320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01230833
B0382673
C0782923
D0476383

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A162971525993.630730%
B162973942.417623%
C16297539233.085844%
D1629710126.209732%

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 18736 16300 12519 12519 66.82% 76.80%
B 18737 16302 191 191 1.02% 1.17%
C 18737 16301 4716 4716 25.17% 28.93%
D 18737 16303 903 903 4.82% 5.54%

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 3 63 27704445 170974.14 648 632 162.0
A 3 78 3040384 18759.84 648 632 162.0
A 14 254 2917063 17998.76 648 632 162.0
B 5 185 639794 1747.71 1723 1662 365.1
B 5 172 593548 1621.05 1723 1662 365.1
B 7 0 265953 723.84 1723 1662 365.1
C 1 241 9419256 23930.75 1414 1399 393.5
C 15 224 4740471 12041.97 1414 1399 393.5
C 2 12 479573 1215.04 1414 1399 393.5
D 8 176 2567940 5421.47 1657 1581 473.4
D 10 172 714509 1506.07 1657 1581 473.4
D 13 153 395515 832.19 1657 1581 473.4

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