ASTROSAT CZTI

Data Quality Report

Orbit 27532

Creation date: 2024-06-27T19:41:03.877731
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/AS1T03_249T01_9000003934_27532cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27532cztM0_level2_quad_clean.evt
Size (bytes)821,185,920151,574,400
Size783.1 MB 144.6 MB
Events in quadrant A5,350,018996,035
Events in quadrant B6,509,525997,688
Events in quadrant C5,364,256953,730
Events in quadrant D6,936,899917,186

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220550
B0257030
C0221860
D0276750

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10490590.562440%
B104914244.041559%
C104911241.181965%
D104912021.925460%

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 13190 10491 9 9 0.07% 0.09%
B 13191 10492 313 313 2.37% 2.98%
C 13191 10491 2 2 0.02% 0.02%
D 13191 10493 184 184 1.39% 1.75%

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 6 16 38481 136.65 1378 1357 271.7
A 13 254 17193 58.29 1378 1357 271.7
A 3 137 12409 40.68 1378 1357 271.7
B 10 245 1094849 4289.3 1357 1327 254.9
B 15 32 42231 160.44 1357 1327 254.9
B 12 111 30593 114.79 1357 1327 254.9
C 14 238 216293 706.76 1311 1320 304.2
C 2 16 23578 73.18 1311 1320 304.2
C 1 16 19130 58.55 1311 1320 304.2
D 1 52 1063775 3434.83 1311 1279 309.3
D 12 227 517767 1669.7 1311 1279 309.3
D 7 80 258660 832.06 1311 1279 309.3

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