ASTROSAT CZTI

Data Quality Report

Orbit 53101

Creation date: 2025-07-24T15:14:04.442381
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_53101cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53101cztM0_level2_quad_clean.evt
Size (bytes)2,554,119,360192,700,800
Size2.4 GB 183.8 MB
Events in quadrant A40,799,579393,529
Events in quadrant B9,751,1461,763,579
Events in quadrant C28,603,3451,008,375
Events in quadrant D13,990,0171,413,390

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01334614
B0419246
C0975824
D0544564

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A181861463680.479490%
B181864352.391950%
C18186738540.608160%
D1818614277.846695%

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 19455 18186 13610 13610 69.96% 74.84%
B 19456 18190 205 205 1.05% 1.13%
C 19456 18189 6509 6509 33.45% 35.79%
D 19456 18190 1274 1274 6.55% 7.00%

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 34324539 127961.16 1064 1038 268.2
A 0 8 616745 2295.41 1064 1038 268.2
A 3 62 360204 1339.0 1064 1038 268.2
B 4 81 460242 1174.33 1859 1793 390.4
B 2 249 410982 1048.15 1859 1793 390.4
B 14 167 333081 848.6 1859 1793 390.4
C 15 157 7165617 17301.59 1507 1493 414.1
C 9 38 6205747 14983.48 1507 1493 414.1
C 15 224 5501334 13282.3 1507 1493 414.1
D 10 172 2148847 4139.73 1803 1723 518.7
D 0 5 1555893 2996.49 1803 1723 518.7
D 3 12 864295 1663.07 1803 1723 518.7

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