ASTROSAT CZTI

Data Quality Report

Orbit 21538

Creation date: 2024-06-27T18:29:19.105541
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_138T04_9000003180_21538cztM0_level2.evt modeM0/AS1T03_138T04_9000003180_21538cztM0_level2_quad_clean.evt
Size (bytes)140,696,64015,264,000
Size134.2 MB 14.6 MB
Events in quadrant A1,017,12084,334
Events in quadrant B1,034,88786,773
Events in quadrant C1,045,44481,479
Events in quadrant D1,041,85180,298

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040471
B041271
C041601
D041811

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1758392.218430%
B1758673.811149%
C1758613.469852%
D1758261.478953%

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 3148 1759 0 0 0.00% 0.00%
B 3148 1759 0 0 0.00% 0.00%
C 3148 1759 2 2 0.06% 0.11%
D 3148 1759 14 14 0.44% 0.80%

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 13 254 2518 41.88 264 259 53.9
A 0 226 2226 36.46 264 259 53.9
A 3 137 2052 33.24 264 259 53.9
B 12 111 5916 111.42 262 257 50.8
B 0 229 5807 109.27 262 257 50.8
B 11 111 5027 93.92 262 257 50.8
C 14 238 39338 667.76 246 248 58.5
C 0 239 38487 653.22 246 248 58.5
C 4 175 2579 39.82 246 248 58.5
D 1 52 49022 788.66 249 241 61.9
D 14 35 32831 526.9 249 241 61.9
D 13 153 9261 145.83 249 241 61.9

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