ASTROSAT CZTI

Data Quality Report

Orbit 57348

Creation date: 2026-05-04T20:13:57.879249
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_102T01_9000006572_57348cztM0_level2.fits modeM0/AS1A14_102T01_9000006572_57348cztM0_level2_quad_clean.evt
Size (bytes)406,235,52091,828,800
Size387.4 MB 87.6 MB
Events in quadrant A2,881,080609,690
Events in quadrant B3,183,075644,930
Events in quadrant C4,286,540556,824
Events in quadrant D4,205,448537,616

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129531
B0138571
C0171561
D0166793

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6185891.438965%
B61861602.586486%
C61863485.625606%
D61852504.042037%

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 7265 6186 12 12 0.17% 0.19%
B 7266 6187 50 50 0.69% 0.81%
C 7266 6187 231 231 3.18% 3.73%
D 7265 6186 211 211 2.90% 3.41%

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 0 12 101791 596.06 683 667 169.7
A 3 14 46395 269.53 683 667 169.7
A 10 251 25848 148.42 683 667 169.7
B 5 185 218637 1537.87 664 640 141.8
B 7 252 113433 795.7 664 640 141.8
B 0 153 49918 347.63 664 640 141.8
C 15 224 1215793 7007.37 637 630 173.4
C 13 3 300400 1728.66 637 630 173.4
C 6 223 89146 510.44 637 630 173.4
D 8 240 438542 2367.48 651 622 185.0
D 5 222 313437 1691.14 651 622 185.0
D 2 249 312612 1686.68 651 622 185.0

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