ASTROSAT CZTI

Data Quality Report

Orbit 35096

Creation date: 2022-03-31T12:05:24.175171
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/AS1T05_015T01_9000005026_35096cztM0_level2.evt modeM0/AS1T05_015T01_9000005026_35096cztM0_level2_quad_clean.evt
Size (bytes)1,099,679,040130,674,240
Size1.0 GB 124.6 MB
Events in quadrant A5,064,796823,792
Events in quadrant B6,017,381836,569
Events in quadrant C6,307,936824,069
Events in quadrant D15,186,876725,280

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0219954
B0248803
C0252633
D0526803

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10793240.222366%
B107931401.297137%
C107932542.353377%
D10793196518.206245%

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 13568 10795 2 2 0.01% 0.02%
B 13568 10795 75 75 0.55% 0.69%
C 13568 10795 223 223 1.64% 2.07%
D 13568 10793 1685 1685 12.42% 15.61%

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 10 83 134537 525.14 1253 1227 253.9
A 13 6 25372 95.11 1253 1227 253.9
A 7 16 21632 80.38 1253 1227 253.9
B 5 172 704841 2971.45 1239 1208 236.8
B 5 255 142596 597.08 1239 1208 236.8
B 0 245 100978 421.33 1239 1208 236.8
C 10 49 562463 2015.0 1208 1215 278.5
C 0 10 474436 1698.96 1208 1215 278.5
C 15 214 447950 1603.87 1208 1215 278.5
D 8 195 6146520 22182.88 1127 1093 277.0
D 7 80 3231280 11659.87 1127 1093 277.0
D 2 249 553028 1992.3 1127 1093 277.0

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