ASTROSAT CZTI

Data Quality Report

Orbit 29741

Creation date: 2024-06-27T20:07:19.078325
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/AS1A10_007T01_9000004276_29741cztM0_level2.evt modeM0/AS1A10_007T01_9000004276_29741cztM0_level2_quad_clean.evt
Size (bytes)2,419,306,560309,847,680
Size2.3 GB 295.5 MB
Events in quadrant A13,039,3121,929,758
Events in quadrant B20,344,2991,947,301
Events in quadrant C16,395,9231,890,087
Events in quadrant D21,733,3911,819,200

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05320
B05320
C05320
D05320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0552294
B0794084
C0652215
D0826214

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A261463491.334812%
B261465932.268033%
C2614511434.371773%
D2614610924.176547%

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 32190 26149 8 8 0.02% 0.03%
B 32190 26148 31 31 0.10% 0.12%
C 32189 26147 405 405 1.26% 1.55%
D 32190 26147 767 767 2.38% 2.93%

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 12 16 470370 722.48 3230 3155 646.7
A 12 194 93827 140.21 3230 3155 646.7
A 13 254 51202 74.3 3230 3155 646.7
B 6 159 7413876 12096.94 3188 3104 612.6
B 0 229 222619 358.32 3188 3104 612.6
B 12 111 77541 121.51 3188 3104 612.6
C 3 233 2228454 3063.8 3098 3118 726.3
C 10 22 1423505 1955.56 3098 3118 726.3
C 14 238 494254 676.19 3098 3118 726.3
D 8 195 6839778 9260.36 3112 3032 738.3
D 7 80 2320811 3139.43 3112 3032 738.3
D 12 227 260754 349.08 3112 3032 738.3

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