ASTROSAT CZTI

Data Quality Report

Orbit 54176

Creation date: 2025-10-03T13:29:29.040164
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_012T01_9000006512_54176cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54176cztM0_level2_quad_clean.evt
Size (bytes)1,754,136,000249,624,000
Size1.6 GB 238.1 MB
Events in quadrant A10,888,2881,711,180
Events in quadrant B10,803,5441,893,063
Events in quadrant C15,589,2541,514,953
Events in quadrant D26,159,8581,107,188

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03920
B03920
C03920
D03920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0468894
B0460754
C0600064
D09128611

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A193067734.003937%
B193063521.823267%
C19306215311.151973%
D19306575429.804206%

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 20476 19310 538 538 2.63% 2.79%
B 20476 19310 101 101 0.49% 0.52%
C 20476 19310 1452 1452 7.09% 7.52%
D 20476 19310 5091 5091 24.86% 26.36%

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 29 1164945 2375.93 1983 1934 489.5
A 0 8 783609 1596.89 1983 1934 489.5
A 15 174 587979 1197.24 1983 1934 489.5
B 15 20 940064 2220.26 1998 1928 422.5
B 7 0 359101 845.31 1998 1928 422.5
B 5 185 323713 761.56 1998 1928 422.5
C 15 215 2951873 5832.97 1854 1835 505.8
C 10 171 1635330 3229.83 1854 1835 505.8
C 15 216 1219723 2408.07 1854 1835 505.8
D 8 176 15476068 32612.84 1662 1585 474.5
D 10 181 2091714 4405.0 1662 1585 474.5
D 2 165 981537 2065.27 1662 1585 474.5

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