ASTROSAT CZTI

Data Quality Report

Orbit 53947

Creation date: 2025-09-18T01:19:32.559389
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_057T04_9000006508_53947cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53947cztM0_level2_quad_clean.evt
Size (bytes)3,296,828,160322,937,280
Size3.1 GB 308.0 MB
Events in quadrant A15,998,1152,643,534
Events in quadrant B17,797,2872,738,016
Events in quadrant C29,324,5452,025,529
Events in quadrant D56,726,428420,894

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0666654
B0726094
C01074684
D018802629

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05780
B05780
C05780
D05780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0310

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2832711033.893812%
B2832817536.188224%
C28328644522.751341%
D283212391984.456764%

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 31517 28331 494 494 1.57% 1.74%
B 31518 28332 934 934 2.96% 3.30%
C 31518 28332 5722 5722 18.15% 20.20%
D 31517 28323 15417 15417 48.92% 54.43%

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 15 174 1618189 2123.88 3064 2991 760.5
A 3 14 556726 728.12 3064 2991 760.5
A 0 8 508996 665.36 3064 2991 760.5
B 0 213 3755837 5848.38 2999 2886 641.7
B 0 155 334063 516.09 2999 2886 641.7
B 1 223 242677 373.68 2999 2886 641.7
C 1 241 14585308 19813.48 2671 2643 736.0
C 15 148 1358159 1841.74 2671 2643 736.0
C 15 157 489362 661.3 2671 2643 736.0
D 8 176 44818628 145358.4 1052 1004 308.3
D 2 165 2378597 7711.32 1052 1004 308.3
D 3 12 1470040 4764.57 1052 1004 308.3

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