ASTROSAT CZTI

Data Quality Report

Orbit 39527

Creation date: 2024-06-27T22:05:43.370518
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/AS1A12_018T01_9000005488_39527cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39527cztM0_level2_quad_clean.evt
Size (bytes)760,884,480168,943,680
Size725.6 MB 161.1 MB
Events in quadrant A6,422,3961,146,121
Events in quadrant B6,159,8821,163,766
Events in quadrant C6,869,4981,091,102
Events in quadrant D7,877,127966,529

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257014
B0260633
C0273713
D0310713

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A107951941.797128%
B107953793.510885%
C107953273.029180%
D107958848.188976%

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 13569 10797 151 151 1.11% 1.40%
B 13569 10797 221 221 1.63% 2.05%
C 13569 10797 336 336 2.48% 3.11%
D 13569 10797 731 731 5.39% 6.77%

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 13 248 975378 4166.53 1159 1133 233.8
A 10 83 777081 3318.48 1159 1133 233.8
A 15 222 178544 758.73 1159 1133 233.8
B 5 255 1590006 7256.77 1145 1115 219.0
B 12 111 28324 124.27 1145 1115 219.0
B 15 85 27030 118.36 1145 1115 219.0
C 9 187 1780135 6801.11 1127 1134 261.6
C 15 214 453479 1729.31 1127 1134 261.6
C 15 208 208200 791.61 1127 1134 261.6
D 12 227 1474240 5434.1 1097 1062 271.1
D 2 249 888906 3274.98 1097 1062 271.1
D 13 249 706428 2601.88 1097 1062 271.1

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