ASTROSAT CZTI

Data Quality Report

Orbit 59070

Creation date: 2026-08-28T17:26:23.462216
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_004T02_9000006600_59070cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59070cztM0_level2_quad_clean.evt
Size (bytes)974,836,80077,109,120
Size929.7 MB 73.5 MB
Events in quadrant A6,860,393587,079
Events in quadrant B3,670,528716,413
Events in quadrant C6,767,507495,287
Events in quadrant D18,240,86445,216

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0252050
B0157970
C0250030
D0588123

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7043110915.746131%
B70441542.186258%
C7044184726.220897%
D7043658593.497089%

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 7042 7042 955 955 13.56% 13.56%
B 7044 7044 64 64 0.91% 0.91%
C 7044 7044 668 668 9.48% 9.48%
D 7043 7043 6518 6518 92.55% 92.55%

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 7 64 3551238 19647.92 730 711 180.7
A 0 24 256985 1418.17 730 711 180.7
A 10 251 68885 377.26 730 711 180.7
B 4 171 266099 1611.89 768 739 164.6
B 0 157 88073 530.5 768 739 164.6
B 5 185 85004 511.85 768 739 164.6
C 15 198 3091768 16781.11 674 668 184.2
C 12 252 704138 3819.03 674 668 184.2
C 6 223 134638 727.3 674 668 184.2
D 12 1 16302101 281015.47 199 189 58.0
D 2 62 517798 8922.64 199 189 58.0
D 6 239 506911 8734.97 199 189 58.0

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

TCT plots

Parameter TCT0 TCT_healed
Tct