ASTROSAT CZTI

Data Quality Report

Orbit 53080

Creation date: 2025-07-21T16:39:09.983808
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_53080cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53080cztM0_level2_quad_clean.evt
Size (bytes)1,425,919,680122,869,440
Size1.3 GB 117.2 MB
Events in quadrant A27,700,21522,584
Events in quadrant B5,720,3771,120,674
Events in quadrant C11,378,487900,166
Events in quadrant D7,122,862906,832

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02260
B02260
C02260
D02260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0896862
B0251192
C0417692
D0291022

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A111221095598.498471%
B111222482.229815%
C11122160014.385902%
D111225975.367740%

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 13132 11122 9908 9908 75.45% 89.08%
B 13132 11124 48 48 0.37% 0.43%
C 13132 11124 1233 1233 9.39% 11.08%
D 13132 11124 427 427 3.25% 3.84%

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 24987331 214828.67 454 443 116.3
A 15 174 204716 1756.27 454 443 116.3
A 12 115 201525 1728.83 454 443 116.3
B 4 81 618296 2597.83 1134 1094 237.6
B 1 255 141465 590.83 1134 1094 237.6
B 10 247 130364 544.1 1134 1094 237.6
C 15 224 5290609 18438.08 1048 1038 286.9
C 9 38 491128 1708.33 1048 1038 286.9
C 13 3 294265 1022.11 1048 1038 286.9
D 12 17 1237454 4051.05 1091 1044 305.2
D 2 172 297978 972.89 1091 1044 305.2
D 8 176 196775 641.31 1091 1044 305.2

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